Home Who we are SDSTA Executive Leadership SDSTA Executive Leadership Mike Headley SDSTA Executive Director / SURF Laboratory Director View Bio Julie Ewing Director of Environment, Safety, and Health SDSTA Contact View Bio Jaret Heise Science Director 605.722.4004 Contact View Bio Wendy Straub Director of Hoists & Shafts, Interim Director of Operations Contact View Bio Deb Wolf Director of Outreach and Culture Contact View Bio