David Mascarenas (right) and Pilot Stan Johnson (left) prepare the RC helicopter with Structural Health Monitoring payload for field experiments on the Alamosa Canyon Bridge in New Mexico. Photo by LeRoy Sanchez.

David Mascarenas (right) and Pilot Stan Johnson (left) prepare the RC helicopter with Structural Health Monitoring payload for field experiments on the Alamosa Canyon Bridge in New Mexico.

Photo by LeRoy Sanchez.