Source
https://thejavagoldblog.wordpress.com/page/11/ search suicide
"On February 17, 1942, Major General Lewis H Brereton, commanding the 5th Air Force, visited what remained of the USAAF bomber units in Java. He later wrote:
…Combat replacement crews did not exist…. Fatigue and combat weariness had worn men to their last ounce of resistance. Pilots returned from attacks crying with rage and frustration when a crew member was killed or when weather or mechanical failure prevent successful completion of the mission. A flight commander, a fine leader, committed suicide. Boys were on the verge of mental and physical collapse…"