. . . "Delta IV Medium+ (5,4)" . "12" . . . "Delta IV-M+(4,2)" . "Delta IV-M+(5,2)" . . . . . . . . "11" . "40" . "3" . . . "Delta IV Heavyis active; Delta IV Medium, M+(4,2), M+(5,2), and M+(5,4) retired." . "Delta" . "Delta-IV" . . . . "2002-11-20" . "Delta IV" . "Delta Cryogenic Second Stage" . "Delta IV M+ (5,4)" . . . "Delta IV-M" . . . . . . . "Delta IV Medium+ (4,2)" . . . . "Delta IV-M+ (5,2)" . . . . . . "2019-08-22" . . . . . . . . "Medium+" . "IV" . . . . . . "Delta IVH" . . . . "Delta IV M" . . "Delta IV#Delta IV Medium" . . . . . . . "Delta 4" . . . . . "Delta IV M+(4,2)" . "Delta IV (4,2)" . "Delta IV-M+" . . . . . . "Delta IV Medium+ (5,2)" . . . "1" . "Delta IV-M+ (5,4)" . . . "M+(4,2)" . . "2" . . . . . . . "Delta IV" . . . "2021-04-26" . . . "41" . . . . . "nch vehicles" . "Delta IV" . . . "2002" . "Delta 4M+(4,2)" . . "3" . "Delta IV M+ (4,2)" . . . "Delta IV-H" . . . "Delta IV Medium" . "Delta IV Heavy" . . . "Delta IV-M+ (4,2)" . . . . "Delta IV HLV" . . . "2004-12-21" .