In this July 31, 2020, file photo, the U.S. flag is seen lowered to half-staff at Park Semper Fi in San Clemente, Calif., after a seafaring assault vehicle sank off the coast of Southern California. A Marine Corps panel convenes Tuesday, Jan. 4, 2022, to decide if an officer should be discharged over the sinking of the amphibious assault vehicle that killed nine service members. (Paul Bersebach/The Orange County Register via AP, File)