I haven’t seen too many Coast Guard Willys Pics. According to the Library of Congress, here’s one from April 1943.
The Library of Congress’ caption to this photo is: Coast Guard anti-saboteur patrol. Vital cargoes of war supplies for America’s far-flung battle lines must also be protected on the docks and piers from enemy attempts at sabotage. The Coast Guard now uses jeeps with armed Coast Guardsmen maintaining vigilant waterfront patrols.