Navy Midshipmen march onto the field before an NCAA college football game against Army, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army Cadets stand at attention after marching onto the field before an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army cadets march onto the field before an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Navy Midshipman Frey Pankratz singles his classmates as they march onto the field ahead of an NCAA college football against the Army, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

Navy Midshipmen march onto the field before an NCAA college football game against Army, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Navy midshipmen march onto the field before an NCAA college football game against Army, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army Cadets salute after marching onto the field before an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Navy midshipmen march onto the field ahead of an NCAA college football against Army, Saturday, Dec. 8, 2018, in Philadelphia,. (AP Photo/Matt Rourke)

President Donald Trump salutes as he walks up the steps of Air Force One at Andrews Air Force Base in Md., Saturday, Dec. 8, 2018. Trump is heading to the Army-Navy football game in Philadelphia. (AP Photo/Susan Walsh)

President Donald Trump waves from the top of the steps of Air Force One at Andrews Air Force Base in Md., Saturday, Dec. 8, 2018. Trump is heading to the Army-Navy football game in Philadelphia. (AP Photo/Susan Walsh)

Navy midshipmen watch as Army cadets march onto the field before an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army cadets march onto the field ahead of an NCAA college football against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

Army cadets stand at attention after marching onto the field before an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Navy midshipmen cheer ahead of an NCAA college football against Army, Saturday, Dec. 8, 2018, in Philadelphia,. (AP Photo/Matt Rourke)

Army cadets march onto the field ahead of an NCAA college football against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump waves as he walks from Marine One to Air Force One at Andrews Air Force Base in Md., Saturday, Dec. 8, 2018. Trump is heading to the Army-Navy football game in Philadelphia. (AP Photo/Susan Walsh)

Army cadets cheer after marching onto the field before an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army cadets march onto the field ahead of an NCAA college football against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

Army Cadets salute ahead of an NCAA college football against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

Army cadets march onto the field before an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army cadets march onto the field ahead of an NCAA college football against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump greets people after arriving via Air Force One at Philadelphia International Airport in Philadelphia, Saturday, Dec. 8, 2018. Trump is attending the Army-Navy football game. (AP Photo/Susan Walsh)

President Donald Trump greets people after arriving via Air Force One at Philadelphia International Airport in Philadelphia, Saturday, Dec. 8, 2018. Trump is attending the Army-Navy football game. (AP Photo/Susan Walsh)

President Donald Trump greets people after arriving via Air Force One at Philadelphia International Airport in Philadelphia, Saturday, Dec. 8, 2018. Trump is attending the Army-Navy football game. (AP Photo/Susan Walsh)

President Donald Trump tosses the coin before the Army-Navy NCAA college football Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump tosses the coin before the Army-Navy NCAA college football game Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, center right, talks with Army Chief of Staff Gen. Mark Milley, center left, during the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. Trump announced that Milley will be the next chairman of the Joint Chiefs of Staff. (AP Photo/Susan Walsh)

President Donald Trump, center right, accompanied by Secretary of Defense Jim Mattis, center left, waves as they walk on the field before of an NCAA college football game between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, center left, and Secretary of Defense Jim Mattis, center right, stand for the national anthem before an NCAA college football between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump meets with Army cadets ahead of an NCAA college football between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, right, talks with Army Chief of Staff Gen. Mark Milley, left, during the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. Trump announced that Milley will be the next chairman of the Joint Chiefs of Staff. (AP Photo/Susan Walsh)

President Donald Trump, center, stands with Defense Secretary Jim Mattis, second from left, during pregame ceremonies at the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump waves to attendees ahead of an NCAA college football between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, center, hold out the coin for the coin toss at the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump meets with Navy player Anthony Gargiulo ahead of an NCAA college football game between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump waves to attendees ahead of an NCAA college football game between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, second from left, is joined by, from left, West Point Superintendent Lt. Gen. Darryl A. Williams, Defense Secretary Jim Mattis and Naval Academy Superintendent Vice Adm. Ted Carter, for a moment of silence for former President George H.W. Bush before the start of the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, second from left, is joined by, from left, West Point Superintendent Lt. Gen. Darryl A. Williams, Defense Secretary Jim Mattis and Naval Academy Superintendent Vice Adm. Ted Carter, during the playing of the national anthem before the start of the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, center, watches a flyover before the start of the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. Army Chief of Staff Gen. Mark Milley watches second from left. (AP Photo/Susan Walsh)

President Donald Trump, second from right, watches a flyover before the start of the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. Army Chief of Staff Gen. Mark Milley is at left. (AP Photo/Susan Walsh)

President Donald Trump, second from left, is joined by, from left, West Point Superintendent Lt. Gen. Darryl A. Williams, Defense Secretary Jim Mattis and Naval Academy Superintendent Vice Adm. Ted Carter, during the playing of the national anthem before the start of the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump waves to the crowd as the walks off of the field before the start of the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, center, talks with Army Chief of Staff Gen. Mark Milley, left, watch from the stands before the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, right, greets Army coach Jeff Monken before the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, right, greets Army coach Jeff Monken before the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump attends the Army-Navy NCAA college football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, second from right, watches a flyover before the start of the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. Army Chief of Staff Gen. Mark Milley is at left,. and West Point Superintendent Lt. Gen. Darryl A. Williams, right. (AP Photo/Susan Walsh)

Navy's Zach Abey leaps for a high snap during the first half of an NCAA college football game against Army, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army's Kelvin Hopkins Jr. drops back during the first half of an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army's Jordan Asberry, left, is tackled by Navy's Sean Williams during the first half of an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Navy's Zach Abey looks to pass during the first half of an NCAA college football game against Army, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army's Jaylon McClinton, center, intercepts a pass tipped by teammate Mike Reynolds, right, that was intended for Navy's Mychal Cooper during the first half of an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Navy's Zach Abey, center, scrambles during the first half of an NCAA college football game against Army, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

Army's Kelvin Hopkins Jr. throws a pass during the first half of an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

President Donald Trump, top center, waves to the crowd during the first half of an NCAA college football game between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)

President Donald Trump, background center, standing with Navy Secretary Richard Spencer, second from left, and Naval Academy Superintendent Vice Adm. Ted Carter, background right, watch the second half of the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, top center, gestures to the crowd during the first half of an NCAA college football game between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, standing with Navy Secretary Richard Spencer, second from left, watches the second half of the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, center, walks with Naval Academy Superintendent Vice Adm. Ted Carter, right, across the field during half-time at the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, center, standing with Naval Academy Superintendent Vice Adm. Ted Carter, right, talks with people during the second half of the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump stands in the seating along the Navy sidelines before the second half of a NCAA college football game between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, center, walks with Naval Academy Superintendent Vice Adm. Ted Carter, right, across the field during half-time at the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

President Donald Trump, left, walks with Naval Academy Superintendent Vice Adm. Ted Carter, right, across the field after the first half of an NCAA college football game between the Army and the Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump crosses the field after the first half of an NCAA college football game between the Army and the Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump, left, walks with Naval Academy Superintendent Vice Adm. Ted Carter, right, across the field after the first half of an NCAA college football game between the Army and the Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump stands in the seating along the Navy sidelines before the second half of a NCAA college football game between Army and Navy, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)

President Donald Trump attends the Army-Navy football game in Philadelphia, Saturday, Dec. 8, 2018. (AP Photo/Susan Walsh)

Army head coach Jeff Monken, right, greets Navy head coach Ken Niumatalolo after an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17-10. (AP Photo/Matt Slocum)

Army players celebrate after an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17-10. (AP Photo/Matt Slocum)

Army's Ke'Shaun Wells celebrates after an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17-10. (AP Photo/Matt Slocum)

Army's Ke'Shaun Wells celebrates after an NCAA college football game against Navy, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17-10. (AP Photo/Matt Slocum)

Army head coach Jeff Monken, right, embraces Navy head coach Ken Niumatalolo after an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17-10. (AP Photo/Matt Slocum)

Army players celebrate with the Commander in Chief's trophy following a 17-10 victory over Navy in an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17 -10. (AP Photo/Matt Rourke)

Army's James Gibson (2) recovers a fumble against Navy's Malcolm Perry (10) and OJ Davis (86) during the second half of an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17-10. (AP Photo/Matt Slocum)

Army players celebrate a victory over Navy after an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17 -10. (AP Photo/Matt Rourke)

Navy Midshipmen stand for their song after an NCAA college football game against Army, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17 -10. (AP Photo/Matt Rourke)

Army head coach Jeff Monken cheers during the second half an NCAA college football game against the Navy, Saturday, Dec. 8, 2018, in Philadelphia. Army won 17 -10. (AP Photo/Matt Rourke)

FILE - In this Dec. 8, 2018, file photo, Army quarterback Kelvin Hopkins Jr. drops back during the first half of an NCAA college football game against Navy, in Philadelphia. Army is coming off a year like no other in the storied history of the football program. (AP Photo/Matt Slocum, File)

FILE - In this Dec. 8, 2018, file photo, Army's Ke'Shaun Wells celebrates after an NCAA college football game against Navy, in Philadelphia. Army is coming off a year like no other in the storied history of the football program. (AP Photo/Matt Slocum, File)

FILE - In this Dec. 8, 2018, file photo, Navy Midshipman Frey Pankratz singles his classmates as they march onto the field ahead of an NCAA college football against the Army in Philadelphia. The 120th Army-Navy game is set for Saturday in Philadelphia. Navy leads the series 60-52-7. (AP Photo/Matt Rourke, File)

FIEL - In this Dec. 8, 2018, file photo, Army head coach Jeff Monken, right, greets Navy head coach Ken Niumatalolo after an NCAA college football game in Philadelphia. The 120th Army-Navy game is set for Saturday in Philadelphia. Army is trying to win its fourth straight game in the series. (AP Photo/Matt Slocum, File)

FILE - In this Dec. 8, 2018, file photo, Army quarterback Kelvin Hopkins Jr. drops back during the first half of an NCAA college football game against Navy in Philadelphia. The 120th Army-Navy game is set for Saturday in Philadelphia. Army is trying to win its fourth straight game in the series. (AP Photo/Matt Slocum, File)

FILE - In this Dec. 8, 2018, file photo, Army head coach Jeff Monken cheers during the second half an NCAA college football game against the Navy in Philadelphia. The 120th Army-Navy game is set for Saturday in Philadelphia. Army is trying to win its fourth straight game in the series. (AP Photo/Matt Rourke, File)

FILE - In this Dec. 8, 2018, file photo, President Donald Trump tosses the coin before the Army-Navy NCAA college football game in Philadelphia. The 120th Army-Navy game is set for Saturday in Philadelphia. President Donald Trump will attend his second straight Army-Navy game. Presidents, by custom, sit on the Army side of the stadium for one half and the Navy side for the other. (AP Photo/Matt Rourke, File)

FILE - In this Dec. 8, 2018, file photo, Army's Ke'Shaun Wells celebrates after an NCAA college football game against Navy in Philadelphia. The 120th Army-Navy game is set for Saturday in Philadelphia. Army is trying to win its fourth straight game in the series. (AP Photo/Matt Slocum, FIle)

FILE - In this Dec. 8, 2018, file photo, Army's James Gibson (2) recovers a fumble against Navy's Malcolm Perry (10) and OJ Davis (86) during the second half of an NCAA college football game in Philadelphia. The 120th Army-Navy game is set for Saturday in Philadelphia. Army is trying to win its fourth straight game in the series. (AP Photo/Matt Slocum, File)