 For the WTOP Mystery Newsmaker Contest, listen this Sunday morning during the 8 a.m. hour. We're going to play the voice of someone you've heard in the news this week on WTOP. Be the first caller at 855-885-1035 to correctly identify the mystery newsmaker and win a four-pack of tickets to Ghostbusters in concert with the NSO at Wolf Trap on July 26. Visit WTOP.com search contest for more information.