Maintain a high level of readiness? At one point during the cold war, the US had B-52s not only fueled and ready to go but also airborne 24/7 (operation chrome dome).
Could also just be fuel vapors in the tanks going off too. Do bears have rigid tanks? In WW2 there was a big difference in survival between planes that did vs ones with bladders that collapsed as fuel was consumed.
Could also just be fuel vapors in the tanks going off too. Do bears have rigid tanks? In WW2 there was a big difference in survival between planes that did vs ones with bladders that collapsed as fuel was consumed.