Protecting the President

1. Protecting the President

2. Secret Service agents keep watch as President Obama visits a Pat Quinn campaign office in Chicago, October 20, 2014. REUTERS/Kevin Lamarque

3. Secret Service agents keep watch on the tarmac as President Obama arrives in Boise, Idaho January 21, 2015. REUTERS/Kevin Lamarque

4. Members of the Secret Service keep watch as a crew member directs the passenger stairs up to Air Force One upon President Obama's arrival in Knoxville, Tennessee January 9, 2015. REUTERS/Kevin Lamarque

5. A Secret Service agent keeps watch moments before President Obama takes the stage to talk about immigration reform in Nashville, Tennessee, December 9, 2014. REUTERS/Kevin Lamarque

6. A Secret Service agent keeps watch over the street from a window as President Obama and first lady Michelle Obama take part in a day of service at the Boys & Girls Club of Greater Washington, in celebration of the Martin Luther King, Jr. holiday in Washington January 19, 2015. REUTERS/Jonathan Ernst

7. A Secret Service agent guards a door as President Obama speaks during a visit to Cross Campus in Los Angeles, October 9, 2014. REUTERS/Kevin Lamarque

8. Members of the Secret Service keep watch as President Obama tours the Secretariat in Yangon, Myanmar, November 14, 2014. REUTERS/Kevin Lamarque

9. Members of the Secret Service Counter Assault Team wait as President Obama arrives in Marine One at the Wall Street Heliport in New York, October 7, 2014. REUTERS/Kevin Lamarque

10. A Secret Service agent with an automatic rifle hurries people to evacuate the White House complex over a security alert moments after President Obama and his family left for the presidential retreat, September 19, 2014. REUTERS/Larry Downing

11. Secret Service officers detain a man after he reportedly threw firecrackers over the fence of the White House, September 16, 2013. REUTERS/Yuri Gripas

12. Secret Service agents guard a street where President Obama met with a family at their home in Las Vegas, October 24, 2011. REUTERS/Jason Reed

13. Secret Service agents step off a Marine helicopter before President Obama departs Andrews Air Force Base outside Washington, October 1, 2014. REUTERS/Larry Downing

14. Members of the Secret Service train their sights on a distant hill as President Obama announces the designation of 346,000 acres of the San Gabriel Mountains as a national monument in San Dimas, California, October 10, 2014. REUTERS/Kevin Lamarque

15. Members of the Secret Service counter assault team stand atop the West Wing of the White House, December 11, 2014. REUTERS/Kevin Lamarque

16. A Secret Service officer maintains visible watch during tenth anniversary ceremonies at the World Trade Center site in New York, September 11, 2011. REUTERS/Robert Deutsch/Pool

17. Secret Service agents and other security detail await the arrival of President Obama on the golf driving range at the Deerhurst Resort in Huntsville, Ontario, during a G8 Summit, June 25, 2010. REUTERS/Jason Reed

18. Then Democratic presidential nominee Barack Obama speaking in the pouring rain as Secret Service agents are pictured on a nearby roof during a rally at Widener University in Chester, Pennsylvania, October 28, 2008. REUTERS/Jason Reed

19. Secret Service agents and Honolulu Police block North Kalaheo Ave. during President Obama's Christmas vacation in Kailua, Hawaii, December 30, 2011. REUTERS/Hugh Gentry

20. President Obama smiles as he puts on his jacket while flanked by Secret Service agents before boarding Air Force One, July 9, 2014. REUTERS/Kevin Lamarque

21. Secret Service snipers walk the plaza on the East front of the US Capitol as the sun comes up in the early dawn, before the 57th inauguration ceremonies for President Obama, in Washington DC, January 21, 2013. REUTERS/Mike Theiler

22. Secret Service agents secure a balcony ahead of the Presidential Inaugural Prayer Service at the National Cathedral in Washington, January 22, 2013. REUTERS/Jonathan Ernst

23. Secret Service agents walk on the White House grounds under heavy snowfall in Washington, February 6, 2010. REUTERS/Yuri Gripas

24. A Secret Service agent provides security for then President-elect Barack Obama's visit to the Lincoln Memorial in Washington, January 10, 2009. REUTERS/Jim Young

25. Secret Service agents surround then Democratic presidential nominee Barack Obama as he steps out of his vehicle to wave to the crowd in Roanoke, Virginia, October 17, 2008. REUTERS/Jim Young

26. Secret Service providing security for President Obama in Pensacola, Florida, June 15, 2010. REUTERS/Jim Young

27. Secret Service agents provide security for then Democratic presidential candidate Barack Obama as he boards an elevator at his hotel in Berlin, July 24, 2008. REUTERS/Jim Young

28. A Secret Service Agent holds open the SUV door for President Obama upon his arrival at Hickam Air Base near Honolulu, Hawaii, December 23, 2011. REUTERS/Jason Reed

29. Secret Service agents surround the stage as President Obama speaks during a campaign rally at Mentor High School in Mentor, Ohio, November 3, 2012. REUTERS/Jason Reed

30. Secret Service agents await the arrival of then Democratic presidential candidate Barack Obama alongside his SUV at Raleigh-Durham airport in North Carolina, May 5, 2008. REUTERS/Jason Reed

31. Surrounded by Secret Service agents, President Obama waves to spectators before getting back in his limo after walking during the inaugural parade in Washington, January 21, 2013. REUTERS/Jason Reed

32. A Secret Service agent keeps watch in an alley as President Obama visits a bakery in Beaver, Ohio, July 6, 2012. REUTERS/Kevin Lamarque