The number of times a well-thrown grenade saved my life are high, but once I bounced one off a metal rod (that I couldn’t hit again if I tried) in a open window in Basra and nearly killed myself and others.
We took to sneaking up to buildings and just lightly lobbing inside at point blank range prior to entry.
And from that type of happenings springeth the old truism of" "Shit Happens".
Believe it or not, I once set a Claymore over a bamboo sprout...that grew enough in three days to upset it to the point of pointing back at my LP hide.
Had I not gone out and checked, it would have given me one hell of a surprise if I'd had to blow it.
Yep...shit do happen.
As for grenades, I used quite a few in 'Nam, but they really weren't our "go to" item, since Charlie had a bad habit of catching them and throwing them back.
That's why I learned to "cook" them for about a three, three and half count.
Got two of the little bastards with one grenade once after cooking for a four-count and the little shit caught it, but didn't get it back in the air quite quick enough.
Then they improved the LP perimeter with Rome plows and weed killer and it was much to far to throw a grenade.