Air Force Doctrine Publication 1, The Air Force 15 to observe adversaries which enables JFCs to counter enemy movements with unprecedented speed and agility. PERSISTENCE Airpower operations are often conducted continuously against abroad spectrum of objectives. Its attributes allow forces to visit and revisit multiple targets without occupying terrain or remaining in proximity to areas of operation to bring force upon targets. Persistence denies an adversary an opportunity to seize the initiative or to directly accomplish assigned tasks. CONCENTRATION Focusing overwhelming power at a decisive time and place is a warfighting imperative, supported by the principles of mass and economy of force. The flexibility and versatility of airpower with its attributes and persistence makes it an attractive option for concentration. The demand for airpower often exceeds the available forces and Airmen should guard against the inadvertent dilution of airpower effects resulting from this high demand.