wht a cool thing i see it be4 in youtube the singapore Civil Defence Force use it part1:http://www.youtube.com/watch?v=o9AubFaku6k&feature=related part2:http://www.youtube.com/watch?v=F_2i7tAkuFw&feature=related part3:http://www.youtube.com/watch?v=YPCGyIZvrJA&feature=related part4 nothing to see already Have Fun with those video