Ohio Governor Mike DeWine addresses guests attending the announcement of the Federal Aviation Administration granting a Certificate of Waiver or Authorization to the Air Force Research Laboratory for beyond-visual-line-of-sight flights of unmanned aerial systems during an event at the Springfield-Beckley Municipal Airport, Springfield, Ohio, April 26, 2019. (U.S. Air Force photo by R.J. Oriez)

This illustration depicts how important precision landing is to a successful lunar mission. The identification of level ground near scientifically important and hazardous sites is essential for the success of long-term missions. (Photo credit: Pat Rawlings/NASA)

Timber sales production in the Chattahoochee National Forest, GA. (Forest Service photos by Cecilio Ricardo)