The catch phrase is overmatching the enemy. There are coming advances with a fusion scope using a .1 lux CMOS. I was issued a .2 lux CMOS HD video cam and with no IR or I2 illumination could see better than the naked eye in the dark, very cool, mini USB, sat uplink, you're on candid camera in the Pentagon, Obama can call the trigger pulls....
Going totally passive with no telltale signals is a very near reality.
I’m all about overmatch. In my novels, the UAVs have come home, and are searching out curfew-breaking patriots. Overmatch is great when you have it, not so great when you are playing the “G.”