Those Killed by Israel vs. Those Hamas is Attempting to Kill

I just watched this video, provided by Israel's Defense Forces:

It shows a number of Palestinian terrorists/militants/soldiers (or whatever politically correct term you prefer) loading missiles onto the back of a truck.

The precision guided bomb sent down by Israel undoubtedly killed them all, as well as destroyed the rockets. We keep hearing about 400 Palestinians killed so far in this conflict. I have heard nothing to dispute the assertion that these men were among that 400. Knowing what they were about to do, are we supposed to feel sorrow for them and anger towards Israel? I'm sorry, but I can't.