Criticality: How important, in a strategic context, is the target? What effect will its destruction have on other elements of the target system? Is it more important to have real-time surveillance of the target (e.g., a road junction) than its physical destruction?
Accessibility: Can an SR team reach or sense the target, keep it under surveillance for the appropriate time, and then exfiltrate after the target is struck?
Recuperability: When the target is destroyed by fire support or direct action, In the case of DA missions, can the enemy repair, replace, or bypass it quickly, minimum resources? If so, it may not be a viable target.
Vulnerability: do SR (including DA) and supporting units have the capability to destroy the target?
Effect: Beyond pure military effect are the political, economic, legal, and psychological effects of destroying the target? How would the attack affect local civilians?
Recognizability: Can the target be recognized clearly, by SR and attack forces, under the prevailing weather, light, and in its terrain? If there are critical points within the target, they also must be recognizable by the means of destruction used.
(WIKI)
And I'm a girl...
