On the evening of the 20th anniversary, the US military shot down two Iranian drones that attacked the Kurdish controlled Erbil airport in northern Iraq.According to a spokesperson for the US led Iraqi coalition, no personnel were injured or damaged.

Another US official told Fox News that the US Anti Rocket, Artillery, and Mortar System (C-RAM) engaged in a firefight with two Iranian made drones carrying bombs.

Every attack on the Indian government, KRI, and coalition has undermined the authority of Iraqi institutions, the rule of law, and Iraqi national sovereignty, "Colonel Wayne Maroto, spokesperson for Inherent Resolve Action, said in a statement on Twitter. These attacks endanger the lives of civilians and partner forces from ISF, Peshmerga, and the alliance

Some US military bases in Erbil have been subjected to a series of attacks by Iranian backed militias this year.This attack is the first attack two months after drone and rocket attacks, targeting the US presence in Baghdad and military bases across Iraq. The rocket landed in and around the heavily guarded Green Zone in Baghdad, the capital of Iraq where the US embassy is located. It caused material damage, but no casualties.

Until recently, attacks have been frequent. The United States accuses Iranian backed militias of launching attacks. Recently, attacks have become more complex, with armed militants using drones instead of Katyusha rockets.Approximately 2500 US troops remain in Iraq, with an additional 900 soldiers in neighboring Syria to ensure that remnants of ISIS remain underground.