31 Key - Military
Problem:

Currently power demands growing per soldier in field

Protection of convoys transporting fuel

Half of all combat facilities were protecting convoys

Protecting power sources – solar - large area requirements

Solution: 

Needs small easy to use power source

After drop low supply foot print

Two reactor core units with turbine generator - size of a small building 

Excess heat usable for water purification

Leave on exit or easily destroyed