Magnets, how do they work?
Senior Airman Joshua Martinez, 2nd Maintenance Squadron non-destructive inspection section, sprays a magnetic particle solution onto a B-52H Stratofortress engine mount on Barksdale Air Force Base, La., Jan. 11. The solution helps repair parts by filling in cracks and other damage. (U.S. Air Force photo/Airman 1st Class Andrew Moua)