Yes Thunder, that is an air dam. All 3 chevy's lost plastics on the front bumpers

. (I made fun of them because my whole front bumper and underside is plastic and I didn't lose/damage anything)
And apetrov1x5, 2 of the 3 chevy's are 4x4 with all terrain tires (one still got stuck) and the red one is 2 wheel with street tires... it took alot to keep that one from getting stuck, mainly carefully planned tire paths and speed for momentum.
I really want video for next time because we all got straight sideways powering through that mud!