Local residents gather around the wreckages of a crashed army helicopter at the crash site on the outskirts of eastern Pakistan's Gujranwala on Oct. 28, 2013. Two pilots were critically injured when a Pakistan army helicopter crashed near Gujranwala on Monday, local media reported. (Xinhua/Stringer)

 A man walks past the wreckages of a crashed army helicopter at the crash site on the outskirts of eastern Pakistan's Gujranwala on Oct. 28, 2013. Two pilots were critically injured when a Pakistan army helicopter crashed near Gujranwala on Monday, local media reported. (Xinhua/Stringer)

 An army official examines the wreckages of a crashed army helicopter at the crash site on the outskirts of eastern Pakistan's Gujranwala on Oct. 28, 2013. Two pilots were critically injured when a Pakistan army helicopter crashed near Gujranwala on Monday, local media reported. (Xinhua/Stringer)