Army officers in certain critical career fields would be allowed to serve up to 40 years in uniform, under a pilot program that was instituted nearly two years ago and is now showing results. Under the change, which Congress approved in the 2019 defense-spending bill, the service can allow these officers to remain in their present jobs. The soldiers to which this applies must be selected for the extension. They largely come from career fields like Foreign Area Officer (FAO), Medical Corps and Army War College professorships. Some engineer and infantry officers would be included as well. As of late last year, 10 officers were selected for the pilot. It is open to pay grades 0-3 (captain) to 0-10 (general).