OK I'll bite on the HIFR
Yes, how the "A" frame gooseneck in the cab made us laugh when we first saw it, now it's how strong your crewy is, and how much they trust his/her harness. (back to that harness again). Not much call for the Naval version of HIFR in the desert (malfunctions apart), and not much call for the probe version at sea (most naval vessels can HIFR a cab if need be). Jolly Jack doesn't use the probe. (ooer!)