Man, I’m feeling old today.

My body isn’t aching. I’ve got most of my marbles. My memory’s still pretty keen.

I just read a headline about “antique” weapons of war being used against the Islamic State.

The picture attached to the story is of an OV-10 Bronco, a twin-engine airplane used during the Vietnam War.

I remember the Bronco. I saw them take off almost hourly from an airfield in a place called Marble Mountain, just a few miles south of Da Nang.

I was assigned to an Army aviation battalion on the western side of the airfield. The OV-10s were piloted by Marines assigned on the other side of the strip. The Marines were stationed with a group called MAG 16, which is shorthand for the 16th Marine Air Group. They flew Broncos, Cobras, Hueys and the Marines’ version of Chinook twin-rotor helicopters.

OK, so I didn’t work on the Broncos, which look vaguely like the old P-38s of World War II; both planes had the twin-fuselage design.

They were effective weapons back then. I guess they’re doing the job now against the Islamic State.

According to the Daily Beast, the Broncos’ mission is somewhat hush-hush. They’ve been used to test updated equipment installed on the birds.

I recall the Broncos being fairly fast and agile aircraft. They would provide firepower to aid ground troops working in the I Corps region of South Vietnam. Today, they’re being used in a similar capacity against Islamic State terrorist fighters.

As the Daily Beast reports: “There are plenty of clues as to what exactly the Broncos were doing. For one, the Pentagon’s reluctance to provide many details about the OV-10s’ overseas missions implies that the planes were working in close conjunction with Special Operations Forces. In all likelihood, the tiny attackers acted as a kind of quick-reacting 9-1-1 force for special operators, taking off quickly at the commandos’ request and flying low to hit elusive militants with guns and rockets, all before the fleet-flooted jihadis could slip away.”

It’s interesting — and somewhat gratifying — to me that tried-and-tested equipment still has its place in this new world of high-tech warfare.

However, to call them “antique” makes those of us who watched these birds fly in their prime feel, well, a bit older than our years.

I can do without the reminder.