radar

Among other stocks that have been on investors’ radar, since the government deemed the rare-earth industry vital to national security, shares of United States Antimony Corp.

Defense manufacturers rely on them to produce everything from F-35 jet fighters, submarines and Tomahawk missiles to drone motors, night-vision goggles and radar systems.

The fact that short interest had recently reached a record high may have helped put the stock on meme-stock traders’ radars to begin with.

It received an order for four Gripen’s from Thailand during the quarter, as well as a radar system order from a Latin American country and a mobile air defense system from the Czech Republic.

In September, air-traffic controllers in Dallas lost radar and other communications, causing flight cancellations, after two fiber optic cables were cut.