Police in Trinidad and Tobago said they have received reports that two of the country's citizens were killed in a U.S. strike on an alleged drug boat.

On Wednesday, at least two B-52 bombers from Louisiana flew for several hours off the Venezuelan coast in international air space in what one senior U.S. official on Thursday called “a show of force.” The B-52s can carry dozens of precision-guided bombs.

The helicopters were engaged in training exercises, according to a US official, that could serve as preparation for expanded conflict against alleged drug traffickers, including potentially missions inside Venezuela.

Three aircraft—call signs BUNNY01, BUNNY02, and BUNNY03—were observed on extended flight patterns from Louisiana's Barksdale Air Force Base in a striking show of force aimed at Venezuelan leader Nicolas Maduro.

Republicans and Democrats say the administration is failing to share basic information with Congress about the intelligence, rationale and goals of its war on drug trafficking.