Two Marines sustain injuries during a training exercise. Mac and Bud investigate whether the company commander has placed his men at undue risk. Harm goes undercover. A third Marine becomes injured. The captain confesses.

A car hits Harm; Mac takes him to a hospital, where an Israeli official undergoes a heart transplant. Members of the Hamas seize control of two floors, to hold the official as a hostage for a prisoner exchange. Harm and Mac help.