Most legacy models of the C-130 Hercules (e.g., C-130E, C-130H, C-130H2) in AMC, AFRC and ANG units will eventually be replaced by the C-130J Super Hercules. The C-130 family has the longest continuous production run of any military aircraft in history and has served in every branch of the U.S. armed forces other than the U.S. Army. During more than 50 years of service, the C-130 has participated in military, civilian and humanitarian aid operations. It is likely that future improvements to the C-130 will mean the design will be in service into the foreseeable future.