First Andrew and Melanie survive one explosion with only some cuts and contusions on Mel, then all three of them are in a second explosion where they were obviously knocked unconscious, buried under boards and debris, with still no injuries. Pretty lucky I’d say.
Any why isn’t Andrew getting them out of there PDQ? Even a psycho would realize, after two explosions and seeing whatever it is sparking like that, it won’t be long before there’s another one. God, I hate when these writers think we just fell off the turnip truck.