President Joe Biden signed an executive order Thursday that aims to curtail the prevalence of 3D-printed guns and machine gun parts and to improve school shooting drills. The executive order creates an “Emerging Firearms Threats Task Force” that will deliver a report to the White House in 90 days detailing the threat posed by 3D-printed machine gun parts and firearms as well as how federal authorities can stop the circulation of the devices, with the order also directing other agencies to improve shooter drills in schools, according to a White House announcement. Read: Russia Reportedly Collab…