Chicago police said Marilyn Hartman, 66, was arrested at Heathrow Airport after sneaking onto a flight to London.
Safety officials said that Metro's “front line personnel are largely unaware of maps showing dead spots in the Metrorail system."
Members of the group claimed to be working for a television network but could not provide media credentials.
Port Authority officials have repeatedly apologized to travelers for the breakdowns that left thousands stranded without their bags.
Kimberly Howell takes over as assistant inspector general for investigations on March 5.
Maryland's transportation secretary, Pete K. Rahn, said the delays stem from a one-year legal battle over the project's environmental impacts.
Green Line single-tracking in Maryland
Whether you're a commuter or a participant, here's what you need to know for both events.
In a cutting letter to Metro General Manager Paul J. Wiedefeld, Comstock said, "the system has gotten worse."
The second-degree felony would be punishable by up to 15 years in prison and a $5,000 fine, under a bill introduced by Del. Angela M. Angel (D-Prince George’s).