Chapter 4 examines reconnaissance operations. Reconnaissance seems, prima facia, to be the least problematic of the special operations mission set from an ethical perspective. Intelligence gathering is universally acknowledged as a legitimate operation in war and peace. Done well and according to plan, reconnaissance missions involve no loss of life and often provide information that enables more discriminate targeting. But reconnaissance operations conducted by SOF, ’special reconnaissance (SR)’, often involve peculiar moral risks. SR missions are typically carried out over a long duration, deep in unfriendly territory, and with limited or tenuous means of support available. If a SOF reconnaissance team is compromised, the consequences are particularly pernicious. Given that compromise could result in mission failure, national embarrassment, imprisonment, or death, are there moral limits to what SOF teams can do to prevent detection? For example, are SR teams ever justified in killing, detaining, or otherwise harming non-combatants to avoid discovery? Wearing camouflage is generally accepted as ethically unproblematic, but what about the practice of ’hiding in plain sight’ by falsifying personal identification, donning local garb, or even dressing in the uniform or distinctive clothing of the enemy? At what point does concealment of identity become perfidy?