Drone that killed US troops in attack slipped past defenses because there was confusion on whether or not it was American: reports

• A drone attack on a US military base in Jordan killed three troops and injured dozens more.
• The exploding system managed to slip past the base's defenses, according to multiple reports.
• The White House and Pentagon have vowed there will be retaliation for the attack.

The drone that struck a US military base in Jordan and killed several American troops managed to slip past defenses because it was confused at the time with another unmanned aircraft, according to multiple reports.

Three US service members were killed and at least 34 more were injured after a one-way attack drone hit Tower 22, a small logistics outpost in northeastern Jordan, early Sunday local time.