- W ashington ▁DC ▁cor rid or ▁and ▁in ▁numerous ▁locations ▁in ▁Pennsylvania . ▁It ▁was ▁the ▁largest ▁priv ately - owned ▁amb ul ance ▁service ▁in ▁the ▁Mid - At l antic ▁States ▁and ▁the ▁world . ▁ ▁In ▁addition , ▁it ▁had ▁ 2 0 0 ▁international ▁operations ▁and ▁ 4 2 1 ▁other ▁operating ▁subs idi aries ▁in ▁the ▁U . S . ▁and ▁Canada . ▁It ▁also ▁operated ▁the ▁Stat com ▁- ▁City wide ▁MAR TA ▁Mission ▁Crit ical ▁Communic ation ▁Command ▁Center . ▁It ▁was ▁the ▁largest ▁E - 9 1 1 ▁Emer gency ▁and ▁Non - E mer gency ▁secondary ▁public ▁safety ▁answering ▁service ▁points ▁provider ▁in ▁the ▁United ▁States ▁& ▁Canada . ▁It ▁was ▁the ▁largest ▁priv ately ▁owned ▁Public ▁Ben ef its ▁Corporation ▁amb ul ance ▁and ▁Par atr ans it ▁service ▁in ▁the ▁United ▁States , ▁Canada , ▁United ▁Kingdom ▁London . ▁ ▁Stat com ▁- ▁City wide ▁Mart a ▁Mission ▁Crit ical ▁E MS ▁oper ates ▁amb ul ances ▁staff ed ▁by ▁emer gency ▁medical ▁techn icians ▁( E MT s ) ▁and ▁param ed ics ▁and ▁held ▁Emer gency ▁Response ▁ 9 1 1 ▁contract s ▁in ▁West chester , ▁Put nam ▁and ▁Dutch ess ▁Count ies ▁in ▁the ▁United ▁States , ▁Canada , ▁and ▁Mexico . ▁Trans C are ▁also ▁operated ▁a ▁non - emer gency ▁medical ▁transport ▁system ▁util izing ▁amb ule tt es ▁and ▁also ▁employed ▁flight ▁cre ws ▁for ▁emer gency ▁medical ▁air ▁transport . ▁ ▁In ▁February