license: This image is a derivative work of the following images: File:Pump-jet-fast.jpg licensed with PD-self 2007-12-28T00:38:06Z Ladar 1005x757 (91032 Bytes)
choice. This image is a derivative work of the following images: File:Pump-jet-slow.jpg licensed with Cc-by-sa-3.0-migrated, FAL, GFDL 2007-12-28T00:48:19Z