[amargherio]

The maximum g-load for an F-16 carrying external fuel tanks or air-to-ground ordinance is 5G and is enforced by the flight computer to prevent the extra weight on the wing hardpoints from causing structural damage to the air frame.

Within the cockpit, on the left side, there's a CAT switch that's used to switch between CAT-I (lighter loadouts, such as A-A) which permits more G-intensive maneuvering, and CAT-III (external tanks or A-G ordinance).

As far as sustained loads higher than 5G's, I could see the potential to kill someone, but I would also guess that the more immediate threat after G-LOC is probably the ground.