make a last-ditch effort to save his motor home, but his fire extinguisher is no match. >> the motor home does not explode, but within my nits the entire vehicle is engulfed, when the police and the firefighters arrive on the scene, they get the fire under control. what started out as a tire blowout destroys the motor home. the rv doctor can't save this motor home, but he does something more important. >> god put me in the right place at the right time, he did. that simple. what are the odds? the rv doctor, the guy who does this for a living rescues your family? come on. coming up, an errand that just can't wait. >> i said, where's your mommy at? she said, my mommy is home asleep. >> when "caught on camera"