Earlier this year, former counterterrorism official Fran Townsend signed an open letter claiming that Trump would “use the authority of his office to act in ways that make America less safe, and which would diminish our standing in the world.”

This week, she too met with Trump in New York, and is under consideration to lead the Department of Homeland Security.

The meetings are part of a broader shift. While not universal, sizable numbers of Republican national security experts are beginning to come to grips with the idea of working for the future president.

“I hope that members of the Republican foreign policy community, even those who were critical during the election season, will be willing to serve and that the Trump administration will welcome them,” Matthew Kroenig, a former advisor to several GOP presidential hopefuls who also signed the letter, said in an email.

“The American people have chosen President-elect Trump to be the U.S. commander in chief for at least the next four years and the country will be best served if he is supported by the country’s top national security experts.”