Staff at QinetiQ sites in west Wales and the Western Isles could be affected.
Tekever in Ceredigion says extra cash could lead to new jobs at their drone manufacturing base.
Police said a man in his 60s has been bailed pending further inquiries, following the death of Llŷr Davies.
The company hopes to generate 200 jobs in the UK over the next three years across its two sites.
Teenager Llŷr Davies died after an incident at a quarry in Pembrokeshire on 12 March.
A group formed a "wave of light" for Llŷr Davies, 16, who died after an incident at a quarry.
Ambulance chiefs say there remains "a very real danger" even after a small drop in temperatures.
One club says it has used the same shipping container as a changing room since 2004.
Ships and boats are told to stay away from a large area when the RAF carries out live firing.
