A Russian fighter jet and a larger U.S. aircraft came within about a half mile of colliding in mid-air nearly two weeks ago during a night mission over Syria, the Pentagon said Friday.

“The Russian jet passed in front of the coalition jet close enough that the jet wash from that flight was felt within the larger aircraft,” said Col. John Dorrian, a Baghdad-based spokesman for Operation Inherent Resolve.

However, Dorrian would not provide additional details on what kind of coalition aircraft was involved in the near crash on Oct. 17.

A separate defense official confirmed to Stars and Stripes on the condition of anonymity that the coalition aircraft was flown by the United States.