Probe doors were removed from the Tomcats as the metal drogue baskets (affectionately known as "iron maidens") used by KC-135s and KC-10s had the tendency to rip the doors off, potentially causing FOD damage to the Tomcat's engines. Thus, the decision to remove these doors from Tomcats operating with ground based tankers such as during ODS, OEF and OIF. The Tomcats delivered to Iran also did not have these doors.