Back in September, a memo started making the rounds at the Pentagon.

It was about something Secretary of Defense Lloyd Austin called anomalous health incidents.

This memo, it's both incredibly vague and weirdly specific.

It defines an anomalous health incident as a series of troubling and sudden sensory events.

An A-H-I, as it's called, could involve headaches, it could make you feel hot,

it could be accompanied by sounds or make you feel pressure.

This is what they should be looking at for.

This memorandum offers advice to anyone who thinks they may be experiencing an AHA.

If they have sudden vertigo, if they feel sudden heat, sound, or pressure in the head,

they should be moving away from their immediate area with anyone who they are with as quickly as possible.

That sounds kind of scary.

Absolutely is scary to a lot of people.

Michael Wilner is a reporter over at McClatchy.

He's been following up with people who got this memo.

He agreed to translate it for me.

Michael says the first thing to know is that AHA is Pentagon speak

for something you may already know about, but you're probably calling it

the Havana syndrome.

There are at least 130 suspected cases of so-called Havana syndrome first reported in Cuba.

Some officials now suspect the so-called Havana syndrome could have been an unintended

consequence of electronic intelligence

gathering, which was then weaponized to intentionally cause harm.

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