My power packs will be drained in approximately 17 minutes, 31,86 seconds. there you are. now, if they should break through, run as if something very nasty is after you yeah, but what about you? dont worry about me, I'll be doing plenty of that, in any case yes, but how will you get back? you just switch on for 30 seconds, and say, every half hour. if you think that it will work well of course it will work and even if it doesn't work, what does it matter? you know what they say about hyperspace 