Lewis says that an attack can be simple and crude: malicious software placed on a thumb drive and left in a parking lot can wreak havoc on a computer system.

NPR: Assessing The Threat of Cyberterrorism

It assumes that you are parking on the left, so reverse the turns of the wheel if parking on the right.

BBC: Who, what, why: How do you parallel park?

The second man told investigators he left Aguilar in the parking lot, but searchers using helicopters and scent dogs failed to turn up any trace of him, police said Sunday.

CNN: STORY HIGHLIGHTS