This.
Also I am familiar with space and payloads. It is highly highly unlikely that a space-based vehicle is in orbit that can start fires by itself. It would be massive (probably the size of a small schoolbus). It would not be stealthy at all. The amateur space community would be all over it.
Not saying DEWs are not possible from space…but for the space crowd it would be too obvious. Also you would NOT see the laser FFS…why the fuck would you want to use VISIBLE light for a secret DEW weapon…engage the grey matter FFS.