A 911 call has been released, capturing a police dispatcher speaking with the wife of William Neil McCasland, 68, who vanished without a trace on February 27.

Susan Wilkerson is heard telling authorities that she believed the former general 'had planned not to be found' after finding her husband's phone and other personal items still inside their New Mexico home.

'He's left his phone. He changed his clothes into... I don't know what. I think he's on foot. All of our cars and bicycles are in the garage,' Wilkerson said approximately three hours after McCasland disappeared.

'He turned it off and left it behind, which seems kind of deliberate because he's always got his phone. He has a smartwatch. I don't know if that's with him or not,' Wilkerson continued in audio obtained by the Law&Crime Network.

After the 911 call, Wilkerson later claimed that 'foul play' was not suspected in the general's disappearance, but noted that McCasland left home with only a pair of boots and his .38-caliber revolver.

The retired Air Force officer, reportedly tied to both nuclear and UFO-related government programs, did not take any of his wearable devices or his prescription glasses, leaving behind any way of tracing or contacting him.

While Wilkerson pushed back on the possibility that her husband may have intended to harm himself, she revealed to 911 that he had been seeing a doctor for both physical and mental irregularities before he disappeared.

When asked by the dispatcher if McCasland had been diagnosed with any type of mental disorder before vanishing, the general's wife disclosed that he had been dealing with anxiety and short-term memory loss recently.

Wilkerson also told 911 the 68-year-old military veteran had been struggling with a lack of sleep, and then revealed McCasland feared his brain was 'deteriorating.'

The dispatcher can be heard asking Wilkerson if her husband kept any guns in the home and if any of them were missing.

She replied that McCasland has a gun safe, adding that 'he has quite a number of pistols and rifles,' not knowing at the time that one of the handguns had been taken.