Definition: In this task, you're given five sentences, numbered 1 through 5. Your job is to generate a title for the story that makes complete sense. The title must be short, with less than three words, use simple language, and include the main topic of the story.
Input: Sentence 1: Dava arrived at the airport and checked her luggage. Sentence 2: She went through the metal detector and it beeped. Sentence 3: She was asked to step aside, and she was searched. Sentence 4: Dava realized she had her keys in her pocket. Sentence 5: She removed her keys, and walked through the detector with no trouble.

Airport Security