Today's edition of quick hits:
* The latest out of Philadelphia: "The engineer at the helm of the Amtrak train that barreled toward a stretch of track at speeds double the limit is now at the center of scrutiny for the crash that has killed eight people and injured hundreds more along the busiest stretch of railway in North America."
* All passengers have been accounted for: "'All individuals who we believe were on that train have now been accounted for,' Mayor Michael A. Nutter of Philadelphia said at a Thursday news conference."
* The victory over fast-track was short-lived: "The Senate on Thursday approved a procedural vote on a key trade bill favored by the White House and strongly opposed by some Democrats. The lopsided 65-33 vote to cut off debate came just days after the Senate rejected a similar procedural vote."
* Not helpful: "[As President Obama] gathered Arab leaders over dinner at the White House on Wednesday and prepared to meet with them at Camp David on Thursday, he faced a perverse consequence: Saudi Arabia and many of the smaller Arab states are now vowing to match whatever nuclear enrichment capability Iran is permitted to retain."
* Problems like these aren't going away: "A man has been detained for flying a drone near the White House, law enforcement officials tell NBC News."
* That didn't take long: "John Diehl on Thursday said he will resign as speaker of the Missouri House this week in the wake of a story published by The Star barely 24 hours earlier about texts replete with sexual innuendo between him and a college freshman in a Capitol internship."
* This was probably inevitable: "A Georgia private school fired its principal after a racially charged remark made at commencement made national headlines."
* This doesn't sound like a book that should be taken too seriously: "The publisher of "Clinton Cash," the book that set the tone for conservative attacks on Hillary Clinton's 2016 run for president last month, said on Thursday it was making seven or eight corrections to factual errors made by author Peter Schweizer."
* Imagine that: "Fox News is angry that Obama knows what's on Fox News."
Anything to add? Consider this an open thread.