Identified in the email as PIR:
Philippe I. Reines (/ˈraɪnəs/; born November 25, 1969) is an American political consultant. He joined the Department of State as a Senior Advisor to Hillary Clinton when she became United States Secretary of State in January 2009, and in 2010 was promoted to the position of Deputy Assistant Secretary of State for Strategic Communications.
Reines was a Managing Director at Beacon Global Strategies LLC, which he founded with partners Jeremy Bash and Andrew J. Shapiro in 2013.
Identified in the email as Jake:
Jacob Jeremiah Sullivan (born November 28, 1976) is an American policymaker and was a senior policy advisor to Hillary Clinton's 2016 U.S. presidential election campaign, with expertise in foreign policy. He was spoken of as a front-runner for the position of U.S. National Security Advisor under a potential Hillary Clinton administration, before she lost to Donald Trump in the 2016 Presidential Election.
Sullivan attended Southwest High School in Minneapolis, Minnesota. He was a debate champion, president of the student council, and voted "most likely to succeed" in his class.
Sullivan attended Yale University, where he received a Bachelor of Arts degree in political science in 1998. In 2000, he graduated with an MPhil having received a Rhodes Scholarship to study international relations at the University of Oxford, and became a managing editor of the Oxford International Review. Afterwards, he returned to Yale Law School and graduated with a Juris Doctor degree in law in 2003.
At Yale, he was an editor of the Yale Law Journal and the Yale Daily News. He was a member of the Yale Debate Association, and earned a Truman Scholarship in his junior year.[6][7] He also worked for Brookings Institution President Strobe Talbott at the Yale Center for the Study of Globalization.
At present, Sullivan is a senior fellow and Master in Public Policy faculty member at the Carsey School of Public Policy.
Sullivan was also a senior advisor to the U.S. government for the Iran nuclear negotiations and a visiting professor at Yale Law School.
Schwerin = Eric D. Schwerin of Washington, DC was appointed to the Commission by the President in April 2015.
http://www.heritageabroad.gov/Members/Eric-D-Schwerin
'Evergreen' is the USSS code name for HRC.
Who is 'Hammer'?
The Treaty Room is located on the second floor of the White House, the official residence of the President of the United States. The room is a part of the first family's private apartments and is used as a study by the president.
https://en.wikipedia.org/wiki/Treaty_Room
What happened on or about May 2 2011?
Just after 11:30 p.m. EST on May 1 (Pakistan’s time zone is 9 hours ahead of Washington, D.C.), President Barack Obama, who monitored the raid in real time via footage shot by a drone flying high above Abbottabad, made a televised address from the White House, announcing bin Laden’s death. “Justice has been done,” the president said. After hearing the news, cheering crowds gathered outside the White House and in New York City’s Times Square and the Ground Zero site.
https://www.history.com/this-day-in-history/osama-bin-laden-killed-by-u-s-forces
Operation Neptune Spear
On May 01, 2011, in a televised address to the Nation, U.S. President Barack Obama confirmed that Osama Bin Laden had been killed that day as a result of a US military operation, codenamed Neptune Spear, by US Special Operations Forces inside a compound in Bilal, a suburb of Abbottabad; a city of 100,000 in Khyber Pakhtunkhwa Province home to to the headquarters of one of the brigades from the Pakistani Army's 2nd Division, as well as the Pakistani Military Academy, the country's equivalent to the US Military Academy at West Point. Abbottabad is located between Pakistan's capital Islamabad, and Peshawar, approximately 30 miles from Islamabad.
https://www.globalsecurity.org/military/ops/neptune-spear.htm
Press Briefing from WH on May 3:
So I can’t get more specific than that. I think it’s been said, so I can say, that Leon Panetta, the director of the Central Intelligence Agency, was on a screen and communicating with those in the Situation Room and the President. So he was present in that room in that sense as well.
Q So they were looking at Leon Panetta?
https://obamawhitehouse.archives.gov/the-press-office/2011/05/03/press-briefing-press-secretary-jay-carney-532011
As more details emerged, CIA Director Leon Panetta "began to hammer folks very hard" about who lived inside, the senior U.S. official with knowledge of the operation said.
Did they call Leon Panetta 'Hammer' because of his repetitive persistent presentation of information?