A-10 Tank Killer Abort bad mission: ------------------ The game normally disables the [Ctrl] + [Alt] + [Delete] warm boot combination. However, If a mission ends badly and you wish to stop the game from saving that result, press [Ctrl] + [Alt] + [Delete] during the brief period of time when the game loads the next part of the program. The aborted mission will not be on file when the game is restarted.