+The airframe flew on 8 July 2017 in Argonia, Kansas, at a Fun Fly hosted by
+the Kloudbusters at their rocket pasture. The motor was a Loki M3464 Blue,
+and everything performed perfectly until apogee. The maximum velocity was
+1047 m/s, or right at Mach 3.1, on the way to an apogee of 32,635 feet above
+ground.
+
+Unfortunately, while telemetry shows the electronics correctly fired the
+apogee ejection charge, clearly the nose cone did not successfully
+separate. The resulting ballistic return impacted about 1.1 miles down range
+to the south-south-west, at 37 9.1739 N, 97 44.8809 West.
+
+With the final telemetry frame received from about 200m altitude on the way
+down, we know impact was at about 2/3 Mach. Not surprisingly, then, what
+we found in the middle of the wheat stubble was a 3" diameter hole with 3
+slots radiating outward, and quite a bit of visible purple paint on the sides
+of the hole. Probing with a shovel handle, we learned the aft end of the
+airframe was on the order of 18 inches below ground level, and the aft end
+of the motor nozzle was at least 4 feet down! Curious to know the fate of
+the fin can that was the focus of this project, we took turns shoveling until
+the fin can was sufficiently exposed to reveal two perfectly intact fins and
+the third sheared off by impact with a fist-sized rock several inches below
+ground level. Given the heat, and lacking either a backhoe or an army with
+shovels, after taking a bunch of photos and logging GPS coordinates, the
+decision was made to abandon recovery and just fill in the hole.
+
+So, two big lessons learned.
+
+ Yes, Bdale can build a fin can that can survive Mach 3!
+
+ Getting so focused on one part of the project that you forget things
+ you know you should do elsewhere to ensure success leads to loss...
+
+What I mean by the second is that while this is the first time I've personally
+put an airframe above 30,000 feet... I've hung around other people who do it
+successfully, and I've listened to details of what they did. In hindsight, I
+"coulda, shoulda, woulda" put more attention on the apogee ejection
+event. More black powder in the charge. More confinement to allow more of
+the powder to burn before being dispersed in the lower-pressure environment
+at altitude. Using one of the spare TeleMega channels to fire an up-sized
+backup charge. Flying a TeleMetrum for full ejection event redundancy instead
+of just a TeleGPS for redundant tracking. But I didn't do any of those things,
+and lost the airframe and everything in it as a result. Yep, lesson learned!
+