The growth in level of focus that the United States has placed on technology as manifested by the Vietnam War era cannot be stated better than by Andrew F. Krepinevich (The Army and Vietnam) who posited that the United States’ army was “equipped with the most sophisticated technology in an age when technology had assumed the role of a god of war.” 
Air power technologies continued to grow in importance throughout the Korean and Vietnam Wars. The helicopter was used in the Korean War for both removal of wounded and the shuttling of commanders to and from the front. Use of helicopters in Vietnam was extensive as a tool for troop mobility and weapon. Roy E. Appleton (East of Chosin) describes the masterful albeit not flawless use of Marine Corsairs in support of ground troops and their ability to deliver deadly machine gun and rocket fire as well as napalm.  Use of radio communication between ground personnel (air controllers of the Tactical Air Control Party (TACP) and fighter and bomber pilots was also impressive in ensuring that strikes hit their mark.
More in Part 4.
 Andrew F. Krepinevich, Jr. The Army and Vietnam. Reprint. The Johns Hopkins University Press, 1988.
 Roy E. Appleman. East of Chosin: Entrapment and Breakout in Korea, 1950. Reprint. Texas A&M University Press, 1991