Members of the Joint Chiefs of staff applaud for the conclusion of the signing of the "28-star" Letter at the Pentagon, Feb. 2, 2015. The letter challenges transitioning service members to continue serving their community and encouraged greater involvement between veterans and the public. (U.S. Marine Corps photo by Lance Cpl. Remington Hall/released) - Members of the Joint Chiefs of staff applaud for the conclusion of the signing of the "32-star" Letter at the Pentagon, Feb. 2, 2015. The letter challenges transitioning service members to continue serving their community and encouraged greater involvement between veterans and the public. (U.S. Marine Corps photo by Lance Cpl. Remington Hall/released)