Point of No Return Bomb Squad

Point of No Return Bomb Squad.

Defuse a series of bombs to get the highest score.  You can back out from an attempt unless you reach the point of no return.  Loose score for time spent attempting to defuse, gain points for ever successfully defused bomb.

Instructions are on the game screen.. your score is only a potential score until you finalize your run... Do you end now or push on for one more bomb?