lives of the gravely wounded. next, dr. sanjay gupta on the fight for survival. >> i was leaning over him and he grabbed me and he said, doctor, am i going to be okay? switch your car insurance to geico and we could help you save on boat and motorcycle insurance too. other insurance companies are green with envy. oh, no, no, no...i'm sorry, but this is all wrong? i would never say that. writer: well what would you say? gecko: well i'd probably emphasize the savings. ya know...lose that green with envy bit. rubbish. it's just a reference about my complexion. writer: but the focus groups thought that the... gecko: focus groups. geico doesn't use focus groups. uhh...excuse me. no one told me we were using focus groups. vo: geico. fifteen minutes could save you fifteen percent or more on car insurance. how did i know? well, i didn't really. see, i figured low testosterone would decrease my sex drive... but when i started losing energy and became moody... that's when i had an honest conversation with my doctor. we discussed all the symptoms... then he gave me some blood tests.