“Heh, nice catch there Bravo, good effort with the whole ducking and covering thing. Shame you left your rump in the air to get blasted by it, though.”  
“Mmmrph… mmh, Brrmho?”  
“Yeah, y’know, if you’re gonna be calling me Angel all the time, I might as well come up with something right back. And with how good you are at catching explodey things, I figured naming you after Castle Bravo was fitting.”  
“Mmmh… mmhkmh?”  
“…Oh, for Celestia’s sake… Castle Bravo was a fort over in Griffon lands that was a major stockpile for their gunpowder and other explodey stuff. I say ‘was’ because one day a freighter making a delivery had the misfortune of catching fire while steaming towards the loading dock. Went up like three tons of TNT.”  
“…”  
“I never said I was good at coming up with nicknames! Shuddap before I punt you into the lake.”
 
So, one day Night Strike was in the middle of carrying four of the recoilless rifle warheads over to Bangline Valley for whatever reason, probably because the thought that maybe Line might actually decide to use one of them as intended for once, but she happened to spot Parchment Bleach out for a stroll while in the air. What a coincidence she discovered that the latch for one of the bombs turned out to be loose, just as she was flying over him in such a way that he was right in the blast zone!
 
Night Strike vehemently rejects any assertations that she had put her plane in a premeditated a dive at the time of release.