The Terrorist/Cold War styles of covert action practiced by GCHQ/FBI/CIA etc. put a lot of emphasize on limiting photographs & believable visual eyewitness views of obvious criminality. So long as this style remains, then extra eyeballs, both human & photo capturing drone, are key components of security & wise expenses to budget for. Human eyeballs & photographer is a relatively simple skill where reliability is still important. Scoping out a new building to see what sort of security mods are best to prevent EMF attacks & spying would be an advanced skill.