A man is screened with a backscatter x-ray machine as travellers go through a TSA security checkpoint in terminal 4 at LAX in Los Angeles

 
A man is screened with a backscatter x-ray machine as travellers go through a TSA security checkpoint in terminal 4 at LAX in Los Angeles
A man is screened with a backscatter x-ray machine as travellers go through a TSA security checkpoint in terminal 4 at LAX, Los Angeles International Airport, in Los Angeles May 2, 2011. REUTERS/Danny Moloshok