A day earlier, the Ridgecrest region had been rocked by a 7.1-magnitude temblor - the most powerful quake to hit Southern California in two decades. The earthquakes' epicentre was close to the city of Ridgecrest, 150 miles (241km) northeast of Los Angeles.
The United States Geological Survey (USGS) says the quake occurred at a depth of about 8 kilometres, and was the result of strike-slip faulting (plates grinding against each other in a roughly horizontal fashion) at a juncture of the Pacific and North American tectonic plates known as the Eastern California shear zone. It's unclear when personnel and their families will be able to return.
Water and gas service had been restored at the base, but engineers were ensuring buildings were safe to enter.
Officials are investigating what they believe to be the first death caused by the earthquakes that shook California last week. Allen says the shaking cracked walls in a chapel and school and brought down commissary shelves.
One person sustained a minor foot injury. The U.S. Geological Survey said the aftershocks will taper off, and the probability of another large quake - magnitude 4 or higher - also will decrease.