The Air Force Science and Technology Fellowship Program (AF STFP), funded by the United States Air Force, provides a platform for outstanding scientists and engineers to engage in vital research and development efforts. Through a competitive selection process, the program identifies exceptionally talented individuals at various career stages, from recent graduates to experienced researchers, offering them the opportunity to conduct self-directed research at Air Force facilities. This program offers high-quality research opportunities, aiming to foster innovation and technological advancement within the Air Force through these collaborations. Applicants must have earned a Ph.D., Sc.D., M.D., D.V.M., or academically equivalent research doctorate before beginning tenure. Applicants can apply at either the postdoctoral or senior level. For Postdoctoral Fellowships, applicants must have held the doctorate for less than five years as of the application deadline. For Senior Fellowships, applicants must possess a doctorate for a minimum of five years by the deadline or hold a permanent position in academia, government, or industry, with a research track record that includes significant contributions and recognition as established investigators in their fields. Individuals with current or recent prior affiliation with the sponsoring agency they wish to apply to may not be eligible. Current or prior affiliation is generally acceptable if it involves research performed in collaboration with scientists at Air Force laboratories as a student, postdoc, or faculty member. A minimum of three (maximum five) recommendation letters are required. The following letter writers should be included: Dissertation Adviser (required for Postdoctoral applicants); individuals (at least two) who have recently worked with the applicant in the applicant's major field; and individuals who are acquainted with the applicant's academic and professional background. There are several application cycles for this program: December 1 - February 1; March 1 - May 1; June 1 - August 1; and September 1 - November 1. Please visit the fellowship's website for more information.