Please answer the following question: Question: Who escort Howard and his aide, Art Thomas (Gerry Bamman), from the Pemrose Building? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: The Secret of My Success Context: Brantley Foster (Michael J. Fox) is a young college graduate who has just earned a degree in business in his home state of Kansas. He travels to New York City to join a large investment firm in an entry-level position he obtained while still a student. He moves into a crummy Manhattan studio apartment and prepares for work.When he arrives at the firm, he finds that it's closing because it was acquired in a hostile takeover and that 90% of the workforce, including himself, is now jobless. However, even without employment, Brantley refuses to give up looking for another job. He's repeatedly turned down with all his interviewers telling him that he lacks the experience necessary.With no good prospects, Brantley decides to play his last card: prior to leaving Kansas, his mother tells him that he's related to Howard Prescott (Richard Jordan), a distant uncle & the CEO of Pemrose, a large New York investment firm and one of the richest in the world. Brantley goes to his uncle's office and convinces Prescott's secretary to give him five minutes alone with Prescott himself. Prescott and his secretary seemed very impressed with Brantley's tenacity (the young man creates a business card by photocopying his smiling face and signing it) and Prescott gives him a job working in the Pemrose mail room. Brantley is immediately disliked by his boss and teamed up with another worker, Fred Melrose (John Pankow), who teaches Brantley how to deliver the mail and leave enough time for goofing off. Fred also tells Brantley not to mix with the executives in the building while he makes deliveries. Brantley is also able to acquire information about the company by looking through memos and other important documents, gaining as much knowledge as he can about the inner workings of the corporation.Back in the mail room, Brantley is charged with driving another Pemrose exec, the bad-tempered Vera (Margaret Whitton), to her home in Litchfield in a limo after her car broke down. His boyish charm soon wins her over on the ride and she invites...
A:
Security guards