@Christian69229  
Which reminds me: rockets/missiles today also use a delayed timer, but as a backup in case the projectile fails to explode on contact or misses.

@rautamiekka  

 
Ahh, I see, I actually had no idea, probably because I’m not usually interested in historic stuff, now I know those are actually a thing, thanks!

Delayed bombs like that have existed since WW2, as the Nazis mixed some into the normal ones to create confusion and additional danger, since there was no way for the victims (in that case the British) to know how long the delay might be.
 
At this point he can get away if he starts moving right away, preferably starts flying (assuming he can take off faster than run, which seems to be case for Pegasi. He’s a bat, though, but I imagine it’s still faster to take off in a panic).
 
That one has the nuclear logo, though, which if true, escaping won’t matter anyway.

My Little Boy