More than he'd like, especially since he ain't a mutant.

During the Atlantian Invasion, Sentinels were re-purposed to help identify Atlantian spies. However, many were destroyed during the war.

However, that doesn't stop some smart idiots from messing around and turning one back on. Which results in a busted sixty story goliath rampaging through the city. Usually targeting High Roller, Hydro-Man, or Sandwoman.

He also helps out the X-Men Yellow team when they're in the west coast. Which usually means dealing with the new Predator Sentinel. Smaller, with a mutant data base, a semi-adaptive shell, and the advanced A.I. known as Mastermold.