To construct advanced base facilities in support of Navy, Marine Corps and other armed services engaged in military operations and be fully capable of defensive combat operations. In operations other than war, provide construction and engineering support to peace keeping, humanitarian assistance, civic action, disaster recovery and base facilities operations and maintenance.

Vision:
To be the most trained and ready battalion in the Naval Construction Force.

Philosophy:

• Safety is our number one priority. It is everyone’s responsibility and must considered always…even in combat!
• Mission Accomplishment. We must plan, anticipate and successfully execute every assigned mission
• Communication: Clear, concise communication is a key to success
• Readiness: We must always be ready!
  • Technical: Know your job, know your rate. Quality of work is very important
  • Tactical: Pursue warfare qualification and understand our combat mission
  • Personal: Concentrate on all three critical parts: physical, mental and spiritual
  • Family: Our family focus should never be less than our work focus
• Leadership:
  • Everyone in NMCB THREE has a leadership role
  • Junior personnel must be trained to be our future leaders
• Care for each other (on and off duty)
• Core values: We will live by the values of Honor, Courage and Commitment
• We will take ownership and be accountable for our gear, our spaces, our people and ourselves
• We will motivate ourselves to excel…both professionally and personally
• We will always be professional
• We will respect the Chain of Command and promote Small Unit Leadership everyday
• We will strive to continuously make our command better
• We will work hard to retain and promote the right people