twa had crew bases in boston, new york, washington, d.c., st. louis, kansas city, chicago, san francisco, los angeles, and frankfurt. international flight attendants' crew bases were located in paris, rome, hong kong, and, at one time, cairo. starting in 1996, twa had a "west coast regional domicile", in which pilots and flight attendants covered originating flights out of major west coast u.s. airports from san diego, california, north to san francisco.