PHOTOS: After Boston, the world beefs up security

Cities across the country and the globe have tightened security in the wake of the Boston Marathon explosions that killed three and injured more than 150 people. In London, British security forces are reviewing security measures for Margaret Thatcher's funeral, scheduled for Wednesday, and for its own marathon, which occurs Sunday. But officials say both events will go on as planned. "We are absolutely confident here that we can keep the event safe and secure," British Sports Minister Hugh Robertson tells The New York Times of London's marathon. "I think this is one of those incidents where the best way to show solidarity with Boston is to continue and send a very clear message to those responsible." Major metropolises around the world are following suit, beefing up security around sporting events and transportation hubs. Here, a look at those who are stepping up to keep us safe.

**

**

Subscribe to The Week

Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

SUBSCRIBE & SAVE

Sign up for The Week's Free Newsletters

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

Sign up

**

**

**

**

**

**

**