Naval Aircrewman Airman Brett Parks strokes through a 50-meter breaststroke warm up at Joint Base Pearl Harbor's Scott Pool during a practice session for the scheduled Wounded Warrior Pacific Invitational in Honolulu, Jan. 8-10. WWPI is a competition among seriously wounded, ill and wounded service members from the Air Force, Army, Coast Guard, Navy and Special Operations Command. The WWPI is the largest joint-service competition to take place outside the annual Warrior Games.