Tensions of a mostly racial nature erupt between two African-American staffers at the ER, the mild-mannered Michael Gallant (Sharif Atkins) and the outspoken Gregory Pratt (Mekhi Phifer). Pratt foments the hostility when he interferes in Gallant's treatment of a suicidal soldier. But when a hypochondriac (Diane Delano) is refused treatment by Dr. Kayson (Sam Anderson) for what seems to be a genuine ailment, Pratt holds his tongue -- with fatal consequences for the patient. Now it is Gallant's turn to unleash his anger at Pratt, a confrontation with long-ranging ramifications. Elsewhere, a distracted Weaver (Laura Innes) makes a disastrous error while demonstrating flu shots on a TV news program, and Carter (Noah Wyle) again confronts Abby (Maura Tierney) about her alcohol problems. ~ Hal Erickson, Rovi