Good Tuesday morning. It's Day 187. Situational awareness: "At the twilight of a storied career and battling a brain tumor, Sen. John McCain stands poised to deliver for his party and his president on the issue that's defined the GOP for the past seven years. It's ... heavy with drama and symbolism. The 80-year-old Arizona senator will return to Washington [today] to cast what could be the deciding vote ... to open debate on repeal-and-replace legislation.'" AP's Erica Werner