Like playing as Chris?
Well, enjoy watching your invincible squad do all the work for you.
You wouldn't want to get in the way anyhow, unless you want to be caught in a perpetual falling animation, because apparently that's how firefights work. A bunch of bullets fly around you and then one makes you fall down.
And there's still not enough ammo so you can't even get enjoyment out of mindless shooting. It's flight or stand.