October 25, 1973🇦🇺Military Encounter
Military base

Exmouth: Black object near naval base

US Navy Lt. Cmdr. M. and fire captain William Gordon Lynn observed a large black object hovering west of North West Cape base before it accelerated north. This occurred amid a DEFCON III alert during the Yom Kippur War.

Date
October 25, 1973
Location / Country
Type
Military Encounter

Background

Witness Accounts

At 19:15, Lt. Cmdr. M. was driving south from the Naval Communication Station Harold E. Holt along Murat Road when he noticed a large black object 5 miles to the west at 2,000 feet. It was at first stationary at 20° elevation, subtended about 0.5°, and showed no sound, exhaust, or trail. After 20–25 seconds it accelerated extremely rapidly to the north and disappeared at 45–50° elevation.

Second Observer

At 19:20, William Gordon Lynn, an Australian civilian and US Navy fire captain, saw a large stationary black object in the clear sky with a pulsating or rotating halo around its middle. He watched it for 4 minutes and estimated 30 feet across at 1,000 feet above hills west of the base, before it disappeared rapidly to the north.

Context and Significance

The same day, the base sent a DEFCON III warning to conventional and nuclear forces because of an NSA false alarm about a Soviet build-up during the Yom Kippur War. The sighting close to the sensitive NSA station caused military concern; no explanation was found. (Sources: NICAP, Chalker IUR 1986, FSR 1986, Good, Swords, Coulthart 2023, Powell, Clark).