More pictures coming soon. Contact us for more details at

Active Shooter Resolution and Response Tactics

 "We are honored to have served with the finest servicemen and women in our Nation. As they retire from military service, they have a deep commitment to share lessons learned from leading people all over the world, to enhance the security and prosperity of our Nation. D-CO is a network of Veterans organized to bring these extraordinary citizens to your Company or Team."  

                                                              Tom DiTomasso, LTC US Army Ret.


D-CO, Leaders and Training LLC, PO BOX 376, Rockwood, Maine 04478       |       +1.910.690.2847      |

Tactical Climbing

Check out the video below of our new DOWNRANGE Leadership program designed for Corporate Teams;      send us a note at for more information. LE and Military versions available. 

Give us a call to host an open course near your location and reserve dates for your Team. 

Scroll down to see our programs with pictures or check out our Snaplinkprogram Catalog for more details.

Our Partners - committed to service and invention.

Marksmanship Evaluation and Training 

Sig Sauer  |   Three Rangers Foundation  |   Leupold   |  KEA Custom

L3   |   Patagonia   |   Guardian-Point K9     |     Spartan Blades USA       

High Noon Holsters    |   DeWitts Range    |    Surefire   |  Tier 1 Targets​     

Oakley     |     iAct Responder Bags     |    Crye Precision

SOF K9 Memorial    |    American Hero Adventures   |   Guardian Group 

Team Maneuver Tactics and Patrolling

Leadership      Service            Training       Experience

D-Co, Leaders and Training LLC © 2014  |  All Rights Reserved

Leadership, Planning and Decision Making
Incident and Tactical Command / Tactical Leaders Course
Team Maneuver Tactics / Advanced SWAT
Advanced Marksmanship Evaluation and Training
Active Shooter Resolution and Response Tactics

 Cold Weather Operations and Mountaineering
Tactical Assault Climbing, Breaching and Mobility
Advanced Tactical K9 Integration and Training
Sniper Observer Employment and Operations
Reduced Signature and Protective Security Detail Training
Operational Consulting, Research and Development​

Contact us 

Our Services

Mountaineering and Cold Weather Operations

Leadership, Planning and Decision Making Seminars and Training

Our mission is to share lessons on Leadership and Training in order to enhance the security and prosperity of our Nation.

We accomplish this through our SNAPLINKprogram (SM), where we attach or “snaplink” D-CO instructors to your Team in order to provide candid assessment and training. Host D-CO at your location and experience our Nation’s best in your organization.