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 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)Malcolm Perry #10 of the Navy Midshipmen attempts to make a catch against Mike Reynolds #10 and Chandler Ramirez #29 of the Army Black Knights during the first quarter of the game at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)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)The Army Black Knights celebrate a first down at the end of the third quarter during the game against the Navy Midshipmen at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)PHILADELPHIA, PENNSYLVANIA - DECEMBER 08: Calen Holt #22 of the Army Black Knights carries the ball during the second quarter of the game against the Navy Midshipmen at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)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)US Military Academy (USMA) show their support prior to the annual Army-Navy football game at Lincoln Financial Field in Philadelphia, Pennsylvania, December 8, 2018. - Trump will officiate the coin toss at Lincoln Financial Field in Philadelphia between the Army Black Knights of the US Military Academy (USMA) and the Navy Midshipmen of the US Naval Academy (USNA). (Photo by Jim WATSON / AFP) (Photo credit should read JIM WATSON/AFP/Getty Images)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)President Donald Trump attends the annual Army-Navy football game at Lincoln Financial Field in Philadelphia, Pennsylvania, December 8, 2018. - Trump officiated the coin toss at Lincoln Financial Field in Philadelphia between the Army Black Knights of the US Military Academy (USMA) and the Navy Midshipmen of the US Naval Academy (USNA). (Photo by Jim WATSON / AFP) (Photo credit should read JIM WATSON/AFP/Getty Images)James N. Mattis. Secretary of Defense, poses for a picture during the game between the Army Black Knights and the Navy Midshipmen at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania.The Army Black Knights defeated the Navy Midshipmen 17-10. (Photo by Elsa/Getty Images)PHILADELPHIA, PENNSYLVANIA - DECEMBER 08: Jackson Pittman #99 of the Navy Midshipmen reacts after the Army Black Knights score a touchdown in the fourth quarter to win the game 17-10 at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)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)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)Army Cadets cheer before the game against Navy Midshipmen at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)Mychal Cooper #88 of the Navy Midshipmen carries the ball during the first quarter of the game against Army Black Knights at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)US President Donald Trump (2nd-L) and US Defense Secretary Jim Mattis (2nd-R) attend the annual Army-Navy football game at Lincoln Financial Field in Philadelphia, Pennsylvania, December 8, 2018. - Trump will officiate the coin toss at Lincoln Financial Field in Philadelphia between the Army Black Knights of the US Military Academy (USMA) and the Navy Midshipmen of the US Naval Academy (USNA). (Photo by Jim WATSON / AFP) (Photo credit should read JIM WATSON/AFP/Getty Images)President Donald Trump tosses the coin before the Army-Navy NCAA college football game Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Rourke)Players of the Navy Midshipmen of the US Naval Academy (USNA) arrive waving the American flag prior to the annual Army-Navy football game at Lincoln Financial Field in Philadelphia, Pennsylvania, December 8, 2018. - US President Donald Trump will officiate the coin toss between the Army Black Knights of the US Military Academy (USMA) and the Navy Midshipmen of the US Naval Academy (USNA). (Photo by Jim WATSON / AFP) (Photo credit should read JIM WATSON/AFP/Getty Images)Navy Cadets taunt Army Cadets as they retreat from the field before the start of the game at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)A Navy Cadet waits in the tunnel prior to marching on to the field before the start of the game against Army Black Knights at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)A U.S. Navy parachute jumper glides toward the field before the start of the game between Army Black Knights and Navy Midshipmen at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Sarah Stier/Getty Images)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 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 watch as Army cadets march onto the field before an NCAA college football game, Saturday, Dec. 8, 2018, in Philadelphia. (AP Photo/Matt Slocum)The Army cadets chant after they marched on the field before the game between the Army Black Knights and the Navy Midshipmen at Lincoln Financial Field on December 08, 2018 in Philadelphia, Pennsylvania. (Photo by Elsa/Getty Images)The Naval cadets celebrate after they marched on the field before the game between the Army Black Knights and the Navy Midshipmen on December 8, 2018 at Lincoln Financial Field in Philadelphia, Pennsylvania. (Photo by Elsa/Getty Images)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)