Visible crew/equipment: When Hackman rises from the ground after the last explosion, a guy is in the upper right corner standing on a balcony holding a device with an antenna (probably a remote device for explosions). He is visible almost four seconds. (01:38:23)
Visible crew/equipment: When Herod is talking to Cort he says, "It takes a lot to scare me, I love the sensation," then it cuts to a shot facing Cort, and just as Herod turns around the moving boom mic casts a shadow on the ground, at the lower right side of the screen (next shot Herod shoots Ratsy). (01:49:10)
Answer: He's a fraud and he's trying to impress people and create a reputation. Most of what he brags about is likely either made up or was actually done by someone else.