Lapse in Boeing credentials for Air Force One probed by Pentagon, WSJ says

The Pentagon is examining why about 250 Boeing employees without security credentials required for highly classified jobs worked on current and future Air Force One jets, The Wall Street Journal’s Andrew Tangel reports. Boeing and the Defense Department are also probing how long workers with access to the planes lacked certain current security credentials, according to a Pentagon official and a person familiar with the matter. According to the people, the "Yankee White" security credentials had expired "months or years ago" in some cases. Reference Link