By Bob Brigham Six key Secret Service agents are in the crosshairs of the House Select Committee Investigating the Jan. 6 Attack on the U.S. Capitol, according to a new report. “The House Select Committee investigating the January 6, 2021, attack on the US Capitol is wrapping up its review of more than a million pages of Secret Service documents and plans to bring in top agents and officials from the agency to testify in the coming weeks, multiple sources tell CNN. The widening list, which sources say includes about a half dozen witnesses, indicates the committee is still pursuing answers from…