"There are photos showing military working dogs used in a threatening manner," said the official, who spoke on condition of anonymity.
A military dog is used to intimidate him.
The breed was very popular among aristocrats of Silla and may have been used as military dogs.
It commemorates the contributions of trained military dogs in wartime.
This led to cross-breeding between the Formosan and the military dog.
Across all the forces, more than 50 military dogs have been killed since 2005.
Several other people were detained by American forces after specially trained military dogs sent into the crowd found them to be armed.
It was the 1,774th flight greeted since May 2003, with 335,195 men and women and 35 military dogs having passed through the airport.
There are photos and stories about some of the most famous military dogs.
At General Miller's recommendation, military dogs were taken to Iraq in the fall of 2003.