The U.S. Air Force conducted a routine launch of an unarmed intercontinental ballistic missile (ICBM) that is capable of carrying a nuclear warhead on Wednesday morning, the military said.

The LGM-30G Minuteman III missile was launched from Vandenberg Space Force Base in California at 12:01 a.m. Pacific Time, the Air Force said.

The unarmed missile, equipped with a single Mark-21 High Fidelity Re-Entry Vehicle, traveled 15,000 mph to a test range near the Kwajalein Atoll in the Marshall Islands, located about 4,200 miles from the launch site, the military said.

“This ICBM test launch underscores the strength of the nation’s nuclear deterrent and the readiness of the ICBM leg of the triad,” Gen. Thomas Bussiere, commander of Air Force Global Strike Command, said in a statement.

“This test launch is part of routine and periodic activities designed to demonstrate that the United States’ nuclear deterrent remains safe, secure, reliable and effective in deterring 21st-century threats and reassuring our allies,” the Air Force said.

Military officials said the launch was a routine test, and not in response to current world events. (U.S. Air Force photo by Airman 1st Class Jack Rodriguez Escamilla)

The Minuteman weapon system is a program that first became operational in the early 1970s, and has received enhancements over the course of nearly 60 years, the military said.

The Air Force now plans to replace the aging Minuteman with the modernized Sentinel system.