So this sort of thing does occur!
Not necessarily paranormal activity but phenomenon rare and unexpected as detected and observed by the military.
"IDF spies rare predator in W. Bank"
"Field reconnaissance unit films big cat roaming near security fence"
"The military released footage from surveillance cameras this week that showed a leopard in the northern part of the West Bank."
The leopard as seen by some sort of low-light level night vision device or forward-looking infra-red camera.
"The spotting of a leopard roaming freely in the Samaria region was rare, as there are only a handful left in the wild in Israel. Most of the few known wild leopards are located further south, in the Judean desert and Negev mountains."
IN ALL OF ISRAEL THERE ARE ESTIMATED TO BE NO MORE THAN A DOZEN WILD AND FREE ROAMING LEOPARDS. AN ISRAELI CAN LIVE THEIR ENTIRE LIFETIME AND NEVER HOPE TO SEE EVEN ONCE A GLIMPSE OF THE BIG CATS.
Military units normally of the special operations type conducting a mission in a surreptitious manner, perhaps occupying a strategic reconnaissance [SR] hide spot more than likely to "detect and observe" whatever sort of phenomenon "rare and unexpected".
Think the novel "Almost Adam". A British soldier [occupying again a SR hide spot] in Kenya during the Mau Mau Rebellion in an accidental manner spotting undiscovered hominids, half-way between the human and the ape! You have to read the book to know the rest of the story.
MILITARY OBSERVERS TOO THOUGHT TO REPORT SUCH MATTERS IN A MORE RELIABLE MANNER WITHOUT AGENDA, DISPASSIONATE.