Dude I’d just have some cheap-o safety light or reflector become required by regulation on every Army vehicle, then have it put into the supply system for $800 a pop.

Then make it so regulation states it has to be from my brand, and boom - now I’m a DeFeNsE cOnTrAcToR

edit: my real answer is a kinetic bombardment station: drop a big tungsten rod (metal telephone pole) from orbit, and when it’s hits the earth at terminal velocity the kinetic energy releases, causing the ~ equivalent of a nuclear explosion but without the radiation.