Wikimedia | Crain's Philadelphia
Photo Credit URL: 
https://commons.wikimedia.org/wiki/File:A_technician_at_the_Strategic_Petroleum_Reserve_inspects_crude_oil_transfer_pipe.jpg
Image: 
Photographer: 
Energy.gov
Photographer URL: 
https://www.flickr.com/photos/departmentofenergy/
Attribution Type: 
Public Domain
Attribution Type URL: 
https://en.wikipedia.org/wiki/Public_domain