Definition: In this task, you're given a short article. Your job is to classify the article based on its category. Use the following classification labels, 0. World, 1. Sports, 2. Business, 3. Science or Technical. Label the text "0" if it contains information related to world. Label the text "1" if it contains information related to sports. Label the text "2" if it contains information related business. Label the text "3" if it contains science or technical related information. 
Input: TSA Tightens Rules For Flight Training The Transportation Security Administration said yesterday that it expanded a program to conduct security checks that could affect more than 100,000 foreign students seeking flight training in the United States and U.S. certified pilots who are noncitizens.
