San Leon fire was dispatched to a reported structure fire - a mobile home on fire in the 700 block of 13th St. Upon the arrival of San Leon Fire units an RV heavily involved in fire was discovered. The crew of Engine 1 stretched an attack line and attacked the fire; Tanker 1 was requested to make location and support Engine 1 with a water supply. Mutual aid was provided by Bacliff Fire to support Engine 1 crew with additional manpower. The fire was brought under control and extinguished within the hour of the FD arriving on the scene.