Cyclops uses his optic blast to shoot a gun out of a guards hand. The gun smokes as if there was a sudden exchange of heat. However, Cyclops' optic blast is concussive and transfers no heat.
One of the Sentinels asks "Where are they?" after the X-Men attack their base. The Sentinels should have already been after the X-Men and not asking where they are, considering they can detect and track mutants in a 5 mile radius.