The Week in Pictures: September 3-9, 2016 (21 images)

A man wears a feathered costume as he marches in the annual West Indian Day parade held in the borough of Brooklyn on September 5, 2016 in New York. The festival celebrates Caribbean heritage and culture and features music, exotic dancing and elaborate costumes. Photo by Monika Graff/UPI

NASA astronaut Jeff Williams, left, Russian cosmonaut Alexey Ovchinin of Roscosmos, center, and Russian cosmonaut Oleg Skripochka of Roscosmos are seen inside the Soyuz TMA-20M spacecraft a few moments after they landed in a remote area near the town of Zhezkazgan, Kazakhstan on Wednesday, Sept. 7, 2016(Kazakh time). Williams, Ovchinin, and Skripochka are returning after 172 days in space where they served as members of the Expedition 47 and 48 crews onboard the International Space Station. NASA Photo by Bill Ingalls/UPI

Homeland Security Jeh Johnson greets K9 Handler Joseph Havens and Nera, a German Shorthair Pointer, after speaking about the success of the TSA's recent measures to reduce wait times for security screenings while maintaining safety during a press conference at Ronald Reagan Washington National Airport in Arlington, Virginia on September 7, 2016. Photo by Kevin Dietsch/UPI

Angelique Kerber of Germany celebrates after match point in her semifinal match against Caroline Wozniacki in Arthur Ashe Stadium at the 2016 US Open Tennis Championships at the USTA Billie Jean King National Tennis Center in New York City on September 8, 2016. Gerber defeated Wozniacki and with the victory becomes #1 in the world. Photo by John Angelillo/UPI