matt_jump1 Published May 28, 2016 at 2628 × 3193 in Wildlands Wildfire – Getting Ready for the Fire Season at the McCall, Idaho Smokejumper Base Almost down and ready for the ground roll. Note the yellow and pink crepe streamers in the trees in the background. Typically 2 sets of streamers are dropped prior to the jumps so that the pilot and spotter can determine wind speed and direction.