Changing Lives, Building Dreams, Opening Doors Enriching lives of individuals living w/ disabilities & our wounded warriors returning from Iraq & Afghanistan Cornerstone's mission is to save and restore the lives of active duty service members, first responders, and frontline medical workers battling service related emotional, psychological, and physical trauma through equine-assisted therapies. To save and restore the lives of veterans and first responders battling service related emotional, psychological, and physical trauma through equine-assisted activities and therapies.