Not funny at all. Only expensive. I am not a big prank guy to start with, but this one is especially lame. Pranks often can backfire too. What if the guy blows a gasket, either physically or emotionally? The target of the prank may end up with a health problem, or the "agents" may end up shot, as their prop guns wouldn't help them to defend themselves.
Just saying. Maybe I am not rich enough to get this prank.
G