 In March 1978, Acosta-Rosario was declared dead/body not recovered based on a presumptive finding of death.PFC Humberto Acosta-Rosario was posthumously promoted to the rank of Staff Sergeant.His name is on panel 47W, line 030 of the Vietnam Memorial Wall in Washington, D.C. and he is also list in El Monumento de la Recordación located in San Juan, Puerto Rico.