Afghanistan is a country in Central Asia. The country is pre-dominantly Muslim. In 2001, in response to the September 11 attacks, a coalition led by the United States of America deposed the country's Taliban government; in the years since, the United States and other members of the coalition have continued to maintain military forces in Afghanistan.
Aaron Stark's flashforward places him with Tracy in Afghanistan. ("White to Play") It is later revealed that Kahmir Dejan was also with them in Aaron's flashforward. ("Playing Cards with Coyote")
Tracy Stark, a United States Marine, was among the American military there. She was reportedly killed in combat, but showed up at her father Aaron's home. ("The Gift")
Vice President Joyce Clemente summons Stanford Wedeck, wanting him to investigate Jericho because in her flashforward, they were involved with the downfall of President Segovia. As a result, in order to collect evidence against Jericho, Wedeck contacts and helps Aaron Stark get into Afghanistan. ("Let No Man Put Asunder")
Janis Hawk tells Mark Benford that FBI forensics found particulate matter from Afghanistan's Kunar Province on Dyson Frost's blueprints and diving photos. ("Goodbye Yellow Brick Road") "K. PROVINCE THE CAVE" appears in white on Dyson Frost's wall. ("The Garden of Forking Paths")
An Afghan man, Malik, is sent by Stanford Wedeck as a guide to Aaron Stark. Malik approaches Stark in a restaurant. They leave together to go search for Kahmir Dejan. They come across a roadblock with armed guards, who shoot and kill Malik, but Stark is saved by the arrival of Dejan. ("Goodbye Yellow Brick Road")
Jericho's Joshua Base, from which Aaron Stark and Dejan rescued Tracy Stark, is located in Helmand Province. ("The Negotiation")