Penn State law professor Stephen F. Ross, pictured left in the image above, stood on the steps of the Supreme Court Thursday night to honor the life of Justice Ruth Bader Ginsburg, who’s currently lying in repose.

Ginsburg’s casket arrived at the Supreme Court Wednesday alongside a large number of her former law clerks, who paid their respects. Her former clerks took turns watching over her casket in pairs, swapping out in 15-minute intervals.

Ross began his watch at around 10 p.m. Thursday. He clerked for Ginsburg in her first year on the U.S. Court of Appeals for the D.C. Circuit in 1980. At Penn State, Ross is a law professor and executive director of Penn State’s Center for the Study of Sports in Society.

Ginsburg will remain on the court’s steps until she lies in state in the U.S. Capitol Friday, becoming the first woman to do so. Later, she’ll be moved to a private service at Arlington National Cemetery, where she’s expected to remain alongside her husband, Marty.

Ginsburg, 87, died from metastatic pancreatic cancer complications on Friday, September 18. She was appointed to the Supreme Court by Bill Clinton in 1993, becoming the second woman ever to join the nation’s highest court.

Penn State President Eric Barron issued a statement Monday commemorating Ginsburg’s life and service to the United States. He encouraged students to honor her life by modeling inclusivity, tolerance, and courage.