Erin Proctor and Jessica Zimmer, from Indianapolis and Martinsville, Ind., respectively, load a simulated injured person in to the back of an ambulance July 23, during Vibrant Response '14, here. Proctor and Zimmer are just two of the many local first responders to participate in VR'14 which is a major field training exercise conducted by U.S. Northern Command and led by U.S. Army North. Approximately 5,000 service members and civilians from the military and other federal and state agencies throughout the country are training to respond to a catastrophic domestic incident.