on the wings. The final AC-130H Spectre gunship, tail number 69-6569 "Excalibur" was retired on 26 May 2015 at Cannon Air Force Base, New Mexico. On 15 November 2015, two days after the attacks in Paris by ISIL, AC-130s and A-10 Thunderbolt II attack aircraft destroyed a convoy of over 100 ISIL-operated oil tanker trucks in Syria. The attacks were part of an intensification of the US-led military intervention against ISIL called Operation Tidal Wave II (named after the original Operation Tidal Wave during World War II, a failed attempt to raid German oil fields that resulted in heavy aircraft and aircrew loss) in an attempt to cut off oil smuggling as a source of funding for the group. On 3 October 2015, an AC-130 mistakenly attacked the Doctors Without Borders hospital in Kunduz, Afghanistan, killing 42 people and injuring over 30. In five separate runs, the gunship struck the hospital, that was erroneously identified as the source of attacks on coalition members. Subsequent inquiries led to punishment of 16 military personnel and cited "human error" as the root cause. On 30 September 2017, the Air Force declared the AC-130J Ghostrider had achieved initial operational capability, with six gunships having been delivered; the aircraft is planned to reach full operational capability by 2023 with 37 gunships delivered. The J-variant is lighter and more fuel efficient than previous versions, able to fly at with a range of and service ceiling of . The AC-130U returned from its final combat deployment on 8 July 2019; the final AC-130U was retired in June 2020. AFSOC started taking delivery of the AC-130J in spring 2019, and the aircraft began deploying to Afghanistan by the summer. Variants In service AC-130J Ghostrider Based on MC-130J; 32 aircraft were procured as of 2014 to replace the AC-130H. As of 2018, the first AC-130J Ghostrider squadron, the 73rd Special Operations Squadron, is operating from Hurlburt Field, Florida. Retired AC-130A Spectre (Project Gunship II, Surprise Package, Pave Pronto) Conversions of C-130As; 19 completed; transferred to Air Force Reserve in 1975, retired in 1995. AC-130E Spectre (Pave Spectre, Pave Aegis) Conversions of C-130Es; 11 completed; 10 upgraded to AC-130H configuration. AC-130H Spectre Upgraded AC-130E aircraft; 8 completed; last aircraft retired in 2015. AC-130U Spooky The 3rd generation AC-130 gunship. The variant was retired in June 2020. AC-130W Stinger II (formerly known as the MC-130W Dragon Spear) Conversions of 14 MC-130W