assistant

Asked for comment, Tricia McLaughlin, Homeland Security assistant secretary for public affairs, described The Times’ questions as “sensationalism” and added “only the media would describe standard agency personnel changes as a ‘massive shakeup.’”

"These two binary black hole mergers offer us some of the most exciting insights yet about the earlier lives of black holes," said Thomas Callister, co-author and assistant professor at Williams College.

Farrell said he had hardly fumbled his way out of his car when assistant director David H. Venghaus Jr. intercepted him, insisting, “You can’t go to the set like this.”

Ms. McClain is an assistant editorial features editor at the Journal.

She is a research assistant professor in otolaryngology-head and neck surgery at the University of Washington School of Medicine and directs lab studies of auditory brain development.