board an aircraft, there would be no chance of survival. >> it was the biggest chemical fire in tuscon's10,000 square foot, 3 storey structure burnt to the ground. >> after my building burnt down, after that, they realised very emphatically the danger of this chemistry. richard luxo nose the chemistry of the battery. boeing chose the most powerful, but the most volatile. >> they went to lithium cobalt, which is way up here for danger. >> luxo stepped down as secure plane president before the fire, and started a new company to make lithium-ion batteries for business jets. he was a true believer in the technology. then he began testing. >> 2.3 amp power series battery pack bullet test. >> luxo went behind the latest industry guidelines, going so far as to fire bullets into bat rice to see if -- batteries to see if they could be made safe for military applications. >> you can run and feel you meet the requirements to be safe. you also need to have a conscience. that's going to tell you "i want to do the extreme." >> in the end, testing with a conscience - luxo couldn't make the batteries me

as we go towards wednesday, no break in the rain, and it will start to make its way to tuscon. good rain for the drought, lighter rain in comparison to what we have seen previously. the threat of flooding and mudslides will be in the picture. san francisco, here is your forecast. monday, tuesday, wednesday rain tapers off. look at this on friday - more rain >>> kevin corriveau there >>> 42 years ago today that astronaut boarded a lunar challenger, the last man to walk on the moon. there has been talk about building a base on the moon, no serious plans. a team of european researchers have an idea about how to accomplish this >>> you are now moon base number one. >> reporter: the idea of a manned base on the moon has been around for decades, and not just in the realms of science fiction. n.a.s.a.'s apollo mission give huge amounts of information. the vast costs of the programme saw it axed in the 1970s. now scientists are looking to the moon, and to mars. >> once you leave earth's orbit and commit to an asteroid or mars, you cut off your support and supply line from earth. you ha