Officers want the tools to do the job - tools that work. That means more money for R&D. So while the MIC has an obvious interest in Trump's actions, the officers want their tools to work correctly and keep their soldiers, marines, airmen and sailors coming home alive, because it can often mean the officers' own lives or careers if they don't.
Add to that, the more R&D performed, the more military personnel needed to work with the civilian contractors. Do you personally know any military personnel beyond the E-5 grade? I come from a military family with a number of active personnel, and used to hear about these concerns often enough until the higher ranking members who were stationed stateside retired.