observable

observable

In military deception, the detectable result of the combination of an indicator within an adversary’s conduit intended to cause action or inaction by the deception target. (JP 3-13.4)

competing observable

Within military deception, any observable that contradicts the deception story, casts doubt on, or diminishes the impact of one or more required or supporting observables. (JP 3-13.4)

Source:
DOD Dictionary of Military and Associated Terms
March 2017 - pages 47 and 171

https://www.tradoc.army.mil/wp-content/uploads/2020/10/AD1029823-DOD-Dictionary-of-Military-and-Associated-Terms-2017.pdf

Ob*serv"a*ble (?), a. [L. observabilis: cf.F. observable.]

Worthy or capable of being observed; discernible; noticeable; remarkable.

Sir. T. Browne.

The difference is sufficiently observable. Southey.

-- Ob*serv"a*ble*ness, n. -- Ob*serv"a*bly, adv.

© Webster 1913.