Slipstream Celebrates 30 Years! Posted on May 19, 2019 at 12:26 pm. By Trish - Backup Categories: News. Tags: 50-Hour Wilderness First Aid, 90-Hour Wilderness First Aid, The Advanced Course, The Essential Course. Slipstream Wilderness First Aid Celebrates 30 Years 1990 Pricing & the Special Feature valid on select Wilderness First Aid courses starting in the summer of 2019. Look for courses marked ’30th Anniversary Sale’.
