An unknown number of guns are being built with the mechanisms, causing problems for the police and ATF officials. Photo: An ATF agent holds a generic unfinished receiver, back, and one that has been manufactured, front, at an ATF field office in Washington, on May 06, 2014. The ATF is trying to crack down on the trade in the makeshift guns by targeting shops and individuals who offer to turn the unfinished receivers into functional pieces for firearms. (Photo by Bill O'Leary/The Washington Post)

An incredible view of Thunderstorms light up the insides of clouds near a beautiful sky line. This is truly heavenly weather as pictures taken from an airplane cockpit reveal what pilots see from above. It looks like at cruising altitude the weather really hots up, with the flight deck revealing some amazing scenes. Thunderstorms light up the insides of clouds, lightening streaks across the sky like cracks in a windscreen, the northern lights sweep uninterrupted across the sky and the galaxy stretches on forever. The pictures were captured by senior first officer Christiaan van Heijst, a 33-year-old from the Netherlands, and his friend Daan Krans. (Photo by Christiaan van Heijst/Daan Krans/Caters News Agency)

Arizona Cardinals cheerleader Claire Thorton, center, smiles as Air Force Capt. Eric Straub proposes to her during the first half of an NFL football game against the Washington Redskins, Sunday, October 12, 2014, in Glendale, Ariz. Thorton accepted the proposal. (Photo by Rick Scuteri/AP Photo)

A Georgia Bulldogs cheerleader celebrates a 33-18 victory over Alabama in the 2022 NCAA National Championship football game at Lucas Oil Stadium in Indianapolis, Indiana, on Tuesday, January 11, 2022. Georgia defeated Alabama 33-18. (Photo by Aaron Josefczyk/UPI/Rex Features/Shutterstock)

Children play football on March 10, 2022 on a concrete slab in Mukuru Kwa Njenga informal settlements, where structures have been demolished in November 2021 to pave the way for the construction of the Nairobi Expressway. (Photo by Simón Maina/AFP Photo)

England football fans celebrate in Trafalgar Square as England score their second goal during extra time in the UEFA Euro womens championship final on July 31, 2022 in London, United Kingdom. England take on Germany in the final of The UEFA European Women's Championship, played at Wembley Stadium. (Photo by Chris J Ratcliffe/Getty Images)

New York Jets running back La'Mical Perine fends off an airborne exercise ball thrown at him as he carries the ball during NFL football practice, Wednesday, June 2, 2021, in Florham Park, N.J. (Photo by Kathy Willens/AP Photo)

A woman cries as Tropical Storm Grace hits a refugee camp at a football field called Parc Lande de Gabion after a 7.2-magnitude earthquake struck Haiti on August 16, 2021 in Les Cayes, Haiti. (Photo by Richard Pierrin/Getty Images)