Army Staff Sgt. Christopher Anzaldua provides medical care to patients on board a HH-60 Black Hawk medevac helicopter enroute to the USNS Comfort, off the coast of Puerto Rico, Oct. 20, 2017. Anzaldua is a critical-care flight paramedic assigned to the 101st Airborne Division’s 6th Battalion, 101st Aviation Regiment, 101st Combat Aviation Brigade. Army photo by Capt. Tyson Friar