leisha begins contractions with her third child.hey're 35 minutes away from the birth center when lisa goes into labor. >> my wife had asked me to film this birth because she hadn't actually seen the previous two births, so she wanted to see this one from camera perspective. so i just set it on my leg and i was paying attention to the road. . oh, my water broke, my water broke, my water broke. >> okay. >> true or false? the best indication that a birth is imminent is when a woman's water breaks. the answer is false. there's actually a more simple signal. >> there's sort of a guttural noise that women begin to make that instinctively that is the clue that labor is going to be happening very imminently. it's the moan-groan type of grunt that is the trigger. >> i reached around and felt his head and that's when i was like, oh, my word, he's coming out in the car. i lost my mind pretty much at that point. i couldn't believe that that was actually happening, and i was like, well, his head's out. i have to push him the rest of the way out