One of America’s strategic “doomsday” aircraft recently arrived at Joint Base Andrews in Washington, DC, amid tensions over potential military action against Iran. The aircraft, known as the E-4B Nightwatch, is designed to serve as an airborne command post for top national security officials and maintain government operations during nuclear emergencies.

Tracked by flight monitoring services, the plane departed Louisiana just before 6 p.m. on Tuesday, following a complex route along the Gulf Coast and around Virginia and North Carolina, before landing in Maryland at 10 p.m., as shown on FlightRadar24. Notably, the aircraft’s callsign was unusual, appearing as ORDER01 instead of the typical ORDER6.

The E-4B is a highly specialized aircraft capable of enduring nuclear blasts, electromagnetic interference, and cyberattacks. It is equipped with thermal and nuclear shielding, features a “ray dome” housing 67 satellite communications antennas, and can fly for over a week without landing, with mid-air refueling capabilities. Each aircraft in the fleet can carry up to 112 crew members and includes facilities like a briefing room, conference area, command center, and rest quarters across three decks.

This flight’s timing may relate to increased presidential security concerns amid escalating Middle East tensions, as Iran faces renewed airstrikes and geopolitical pressure. The US is actively working on replacing its fleet of E-4B planes; a $13 billion contract with Sierra Nevada Corporation was signed last year to develop this next-generation command aircraft.

In response to recent hostilities, Iran’s Supreme Leader rejected diplomatic overtures, despite several Iranian aircraft evacuating the country’s airspace for Oman, prompting speculation about high-level leadership evacuations or peace negotiations in Muscat.

The E-4B remains a critical element of national security, capable of global communication and command in times of crisis.