The Air Force has begun the roll out of Tier 2 physical training standards. The adoption of the Tier 2 standards will exempt battlefield Airmen from three of the four components of the Air Force fitness assessment. Air liaison officers and tactical air control party operators will soon see the implementation of new physical fitness test requirements, making them the first career fields in the Air Force to have occupationally-specific and operationally-relevant standards, as well as a second fitness assessment. According to Air Force Instruction 36-2905, Fitness Program, all Airmen are required to maintain a certain level of physical fitness. For more information, see this Military.com article.