Foltz had been serving as a student instructor at the National Invitational Scholarship Camp in Wales, Wisconsin, according to a camp spokesman.
"Last night, we lost one of the best young men who I have ever had the honor to coach and who has ever worn the Nebraska uniform," Nebraska coach Mike Riley said in a statement. "Sam was universally loved and respected by everyone he touched and on whom he had a positive influence each and every day. His tragic loss is immeasurable to his family, his friends, his classmates, his teammates and his coaches and our thoughts and prayers are with all of them. The young men in our football program are hurting but I know that their strength of character and resolve will bring us together and we will honor Sam every day moving forward."
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