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Your spacecraft has crash-landed on the moon, about 250km from the fledgling lunar settlement. You must prioritise the 15 items so that the item most critical to your survival is ranked number 1 and the least useful at number 15. Briefly record your rationale for ranking each item as you do. Your results will be compared to those of an expert team of NASA engineers and scientists.
There is no internet on the moon so you cannot use Google, Siri or any of their friends

Item Ranking (1-15) Rationale (Optional)
Box of matches
Food concentrate
15 metres of nylon rope
Parachute silk
Portable heating unit
Two .45 calibre pistols
One case of dehydrated milk
Two 45-kilogram oxygen tanks
Stellar map
Self-inflating life raft
Magnetic compass
20 litres of water
Signal flares
First aid kit, including injection needles
Solar powered FM receiver-transmitter