The fear was apparent Thursday in downtown Los Angeles, as police wearing body armor patrolled outside their own iconic headquarters.

CNN: STORY HIGHLIGHTS

You were pretty safe wearing all that armor.

NEWYORKER: Beginners

The next astronauts to step out onto the dusty gray surface of the moon will be wearing a suit that's very different from the bulky white armor worn by the Apollo explorers.

NPR: NASA's Future Spacesuits Are Made for Walking