Question: The Commander-in-Chief's Trophy is awarded after the Army-Navy Game, which is a game between which two parties?

Context paragraphs:
2016 Army Black Knights football team: The 2016 Army Black Knights football team represented the United States Military Academy in the 2016 NCAA Division I FBS football season.  The Black Knights were led by third-year head coach Jeff Monken and played their home games at Michie Stadium.  They competed as an independent.  They finished the season 8–5, including defeating Navy for the first time since 2001 in the traditional Army-Navy Game.  They were invited to the Heart of Dallas Bowl where they defeated North Texas in overtime.

Army–Navy Game: The Army–Navy Game is an American college rivalry game in college football between the Army Black Knights of the United States Military Academy (USMA) at West Point, New York, and the Navy Midshipmen of the United States Naval Academy (USNA) at Annapolis, Maryland.  The Black Knights (formerly the "Army Cadets" and "Army Black Knights") and Midshipmen each represent their service's oldest officer commissioning sources.  As such, the game has come to embody the spirit of the interservice rivalry of the United States Armed Forces.  The game marks the end of the college football regular season and the third and final game of the season's Commander-in-Chief's Trophy series, which also includes the Air Force Falcons of the United States Air Force Academy (USAFA) near Colorado Springs, Colorado.

Communist Party of Nepal (Unity Centre–Masal): Communist Party of Nepal (Unity Centre–Masal) (Nepali: नेपाल कम्युनिष्ट पार्टी (एकताकेन्द्र–मसाल) ) was an underground communist political party in Nepal.  CPN(UC–M) was formed in 2002 through the merger of Communist Party of Nepal (Unity Centre) and Communist Party of Nepal (Masal).  The merger of the two parties was announced at a public meeting on April 22, 2002 by the general secretaries of the two parties, Ram Singh Shris of CPN(Masal) and Narayan Kaji Shrestha (Prakash) of CPN(UC).  The CPN(UC–M) adhered to Marxism–Leninism–Mao Zedong Thought as its ideological basis.  The founding general secretary of CPN(UC–M) was Mohan Bikram Singh.  The two electoral mass fronts of the two parties merged into Janamorcha Nepal.  The Janamorcha Nepal joined the Seven Party Alliance and took active part in the 2006 Loktantra Andolan.

Collin Mooney: Collin Karl Mooney (born 3 April 1986) is an American football fullback who last played for the Atlanta Falcons of the National Football League (NFL) before being released on February 15, 2016.  He played college football for the Army Black Knights of the United States Military Academy.  Mooney is West Point's all-time single-season rushing leader with 1,339 yards.  In the last play of the 2008 Army-Navy Game, his final college game, he bested Mike Mayweather's record by a single yard.  Mooney played for the Tennessee Titans of the National Football League during the 2012 and 2013 seasons.

Commander-in-Chief's Trophy: The Commander-in-Chief's Trophy is awarded to each season's winner of the American college football triangular series among the teams of the U.S. Military Academy (Army Black Knights), the U.S. Naval Academy (Navy Midshipmen), and U.S. Air Force Academy (Air Force Falcons).

Two-party system: A two-party system is a party system where two major political parties dominate the government.  One of the two parties typically holds a majority in the legislature and is usually referred to as the "majority" or "governing party" while the other is the "minority" or "opposition party".  Around the world, the term has different senses.  For example, in the United States, Jamaica, and Malta, the sense of "two party system" describes an arrangement in which all or nearly all elected officials belong to one of the only two major parties, and third parties rarely win any seats in the legislature.  In such arrangements, two-party systems are thought to result from various factors like winner takes all election rules.  In such systems, while chances for third party candidates winning election to major national office are remote, it is possible for groups within the larger parties, or in opposition to one or both of them, to exert influence on the two major parties.  In contrast, in the United Kingdom and Australia and in other parliamentary systems and elsewhere, the term "two-party system" is sometimes used to indicate an arrangement in which two major parties dominate elections but in which there are viable third parties which do win seats in the legislature, and in which the two major parties exert proportionately greater influence than their percentage of votes would suggest.

Evan Washburn: Evan Washburn is an American reporter for CBS Sports.  He joined the company in 2014, and is a part of the network's coverage of the NFL, CBS coverage of SEC Championship Game, Army-Navy Game and Sun Bowl and NCAA basketball, along with contributing to CBS Sports Network.

Relay attack: A relay attack in computer security is a type of hacking technique related to man-in-the-middle and replay attacks.  In a classic man-in-the-middle attack, an attacker intercepts and manipulates communications between two parties initiated by one of the parties.  In a classic relay attack, communication with both parties is initiated by the attacker who then merely relays messages between the two parties without manipulating them or even necessarily reading them.

Trusted third party: In cryptography, a trusted third party (TTP) is an entity which facilitates interactions between two parties who both trust the third party; the Third Party reviews all critical transaction communications between the parties, based on the ease of creating fraudulent digital content.  In TTP models, the relying parties use this trust to secure their own interactions.  TTPs are common in any number of commercial transactions and in cryptographic digital transactions as well as cryptographic protocols, for example, a certificate authority (CA) would issue a digital identity certificate to one of the two parties in the next example.  The CA then becomes the Trusted-Third-Party to that certificates issuance.  Likewise transactions that need a third party recordation would also need a third-party repository service of some kind or another.

Phone tag: Phone tag is a phenomenon in which two parties attempt to contact each other by telephone, but neither is able to get a hold of the other for a conversation.  Both parties may leave a message on the answering machine or voicemail of the other, and request a call back.  This continues for a period of time, often with the two parties exchanging attempts to have a real-time conversation.  The name derives from the playground game tag, where players chase one another in turn.

Supporting paragraphs: Army–Navy Game Commander-in-Chief's Trophy
Answer: U.S. Military Academy (Army Black Knights), the U.S. Naval Academy