Frank Rosenblatt

The Trump administration says the strikes are legal and aim to stop the flow of illicit drugs.

But experts, including former military lawyers, disagree.

The vast gulf over the lawfulness of the operations is putting American service members in a tough spot, prompting some to seek outside legal guidance.

We're receiving a lot more calls in the last three months than we did before.

That's Frank Rosenblatt with the Orders Project, a nonpartisan group that provides legal support for members of the U.S.

military.

His organization and others NPR spoke with say they've received calls from service members, including staff officers and at least one drone pilot, with concerns about potential legal blowback for themselves and

for taking part in the campaign.

Ryan Lucas, NPR News, Washington.