Operations | Slideshow

HazMat Evacuation at Hamburg Airport

01 / 08

HazMat Evacuation at Hamburg Airport

Travelers wait outside the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)

02 / 08

HazMat Evacuation at Hamburg Airport

Travelers wait outside the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)

03 / 08

HazMat Evacuation at Hamburg Airport

Travelers wait outside the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)

04 / 08

HazMat Evacuation at Hamburg Airport

Travelers wait outside the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)

05 / 08

HazMat Evacuation at Hamburg Airport

Travelers wait outside the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)

06 / 08

HazMat Evacuation at Hamburg Airport

Travelers wait outside the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)

07 / 08

HazMat Evacuation at Hamburg Airport

Ambulances stand outside the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)

08 / 08

HazMat Evacuation at Hamburg Airport

Rescuers stand at the Hamburg, northern Germany, airport Sunday, Feb. 12, 2017 after after several people were injured by an unknown toxic that likely spread through the airport's air conditioning system. (Axel Heimken/dpa via AP)