Pictured soon after delivery May 22, 1985, this Challenger first went to 412 Squadron based out of Ottawa. ON for VIP transport. Converted to Interim Electronic Support Trainer by 1995, the aircraft would later receive full EST upgrade before sold to the USA as N25V. It's still current on the US register at the time of uploading.
Second use of this registration on a Challenger 604, previously having been used on c/n 5476 between Nov 2000 and Jun 2001. The aircraft seen here carried it quite a bit longer, between May 2002 and Oct 2013.