The U.S. has issued a formal complaint to China following the use of military-grade lasers by Chinese nationals in an effort to interfere with U.S. military aircraft stationed at an American base in Djibouti, per the AP. The incidents were first reported by CNN and confirmed by the Pentagon.

The details: The activity, which the Pentagon claimed came from a nearby Chinese base, caused two eye injuries to American pilots. Pentagon spokeswoman Dana White added that the U.S. has asked China to investigate the incident.