NICOSIA, CYPRUS — Experts from the U.S. Air Force are looking at ways to upgrade Cyprus’ premier air base for use as a humanitarian staging post in future operations in the Middle East, a Cypriot official told The Associated Press on Thursday. Cyprus, which is only 184 kilometers from the Lebanese capital, Beirut, has acted as a transit point for the repatriation of foreign nationals fleeing conflict in the Middle East and beyond on numerous occasions in the past. It has also served as a transit point for humanitarian aid to Gaza. Experts from the 435th Contingency Response Group based