Built for NARTREK Bronze streamer and parachute duration flights. Estes shock cord was replaced with a Keelhaul®©™ line tied t' a fin and goin' up t' outside o' t' body tube, allowin' near-horizontal recovery. Ya scallywag! Estes streamer was replaced for duration flights with a wide pleated Mylar streamer and a Mylar chute. Rocket nay painted until after duration flights.