Here is a concise original summary based on the information published by the source. 4 PAF pilots killed in training mishap Philstar.com2 Philippine air force planes collide during a training flight, killing all 4 pilots AP NewsPH Air Force confirms incident involving two SF-260 aircraft in Batangas ABS-CBNVideo: 2 Planes Crash Mid-Air During Training In Philippines, 4 Pilots Killed NDTV1Lt. Angeleo Adrian Peñaflor, a class valedictorian and magna cum laude graduate of Cagayan State University-Carig, was among the four Philippine Air Force pilots killed after a mid-air collision during a training flight at Fernando Air Base in Lipa City, Batang Facebook For the full context and any later updates, use the original source link.