SAN ANTONIO -

A general court-martial is scheduled to begin Tuesday at Joint Base San Antonio-Lackland for a U.S. Air Force Airman facing several sex charges that involve local teens.

Airman 1st Class Nathan G. Wilson-Crow of the 3rd Combat Camera Squadron faces charges that include performing a lewd in the presence of a minor, assault, rape and improper sexual contact.

The charges stem from unrelated incidents that allegedly occurred in late April and over the summer.

Some of the incidents allegedly occurred during a O'Connor High School student trip at a camp site near Rocksprings, Texas.

The other incidents occurred at Calaveras Lake, and were considered to be more serious in nature, according to the San Antonio Express-News.

Opening arguments are scheduled to begin at 8 a.m. Tuesday.