
Tier One Navigation Development
Overview
Tier One Navigation Development (TONDEV) is designed for military personnel preparing for an Army SMU assessment. Most clients are heading to selection in West Virginia, while others are pursuing a similar program associated with Fort Belvoir. This performance-focused training evolution is designed to validate readiness, expose weaknesses, and refine execution before their rally date.
Training is structured around a series of staged checkpoints designed to validate navigation performance under conditions that mirror those found during “stress phase.” We run this training in two variants:
- The standard one-day variant consists of a single core evolution lasting approximately fifteen (15) hours, depending on the season. Training begins near first light and concludes at sunset, with clients typically covering around 25 miles while navigating a mix of staged checkpoints across varied terrain.
- TONDEV-X is our extended, two-day variant (priced at $1,200 per person). It introduces cumulative fatigue, limited recovery, and sustained decision-making demands—testing a client’s ability to navigate accurately under prolonged stress, not just today, but tomorrow.
Both variants are scheduled to dovetail with our SOF Overland Development (SOF-OD) course, providing the option to complete three to four consecutive days of intensive training. Running these courses side by side allows clients to build a training progression that best supports their assessment timeline and preparation goals. While each course stands on its own, most clients elect to complete both, as the combined progression allows for deeper refinement of land navigation skills while acclimating to the region’s terrain, vegetation, and climate — setting the conditions for peak performance.
Our training stands apart because we keep class sizes extremely small to maximize your training. This coaching-intensive environment allows instructors to continuously observe, assess, and refine performance while providing individualized feedback throughout each evolution. Clients also benefit from practical preparation insights informed by years of working with experienced SOF personnel preparing for demanding assessment and selection programs.
Instructors manage the logistics, support, and training infrastructure behind each evolution. The result is a realistic performance-based training environment that would be difficult for most candidates to replicate independently.
Highlights
When outcomes matter, clients invest in professional instruction that delivers results.
- Built for high-stakes preparation: Our courses are designed for candidates preparing for demanding assessments. Small class sizes and well planned training days ensure focused learning and meaningful development.
- Highly skilled instructors: Training is led by experienced professionals who adapt instruction to the individual, identifying and refining performance areas that matter under assessment conditions.
- Trusted by SOF members: True North has extensive experience working with the USSOCOM community—both individually and at the unit level—across Army, Marine Corps, Air Force, and Navy components. Most of our SOF clients come through referrals by prior clients.
- Proven training environment: Instruction takes place in a training area used by an Army SMU, allowing you to train under realistic conditions.
- Structured training evolution: Instructors manage the planning, logistics, support, and performance oversight behind each evolution, allowing candidates to focus entirely on execution.
Feedback from Prior SOF Clients
- “Your training left me feeling absolutely prepared … I didn’t leave anything on the table” — Navy SO
- “This course is exactly what I needed. I can't thank you enough.” — Navy SO
- “Thank you again ... I appreciate the training you provide. I definitely feel confident going forward.” — Marine CSO
- “Really appreciate your time and accommodating my needs. Learned a lot from you all.” — Navy SO
Related
The physical difficulty of this course is Strenuous. This course involves hiking, usually with laden rucks, over extended distances at a steady pace over varying terrain that will include off-trail sections, rough spots, unexpected obstacles, and low to steep terrain inclines and declines. This course is conducted in low to no light conditions in varying weather, including hot, cold, humid, rain, and snow, or a mixed combination. This is a very physically challenging course so it is only suited for those in excellent physical condition and ready for a long day.
You must already be a competent navigator with cross-country experience to enroll in this course. We will certainly help you to fine-tune your technique and improve, and answer all of your questions, but if at any point during this program we are not confident in your overall skill and physical fitness level, then you will be asked to leave with no refund available. If you have any general questions, especially those concerning your present ability, we strongly recommend that you contact us for answers before you register.
Once you book a slot, then one of our staff will follow up personally with an email. It will include three short forms for you to complete and return to us. We will also send you the course information sheet, which will contain all of the details that you will need to prepare and arrive (like required and optional gear; exact rally point; general driving directions; and overnight recommendations).
This course is often conducted as a private offering to better accommodate the specific needs, goals, and schedules of an individual or group. Please note that if you see a class on our schedule listed as a “Private Group,” you may still be able to join so don't hesitate to inquire (in many cases, these sessions are scheduled for an individual client who is willing to share the training, which can also reduce overall costs). Please contact Erik for additional details (412.913.6000 or erik@exploretruenorth.com).
We typically reply to emails and telephone calls within 1-2 hours. Please note, however, that it may be as long as 24 hours if we are away teaching.

This intensive training will help you to maximize your many months of preparation.

Upcoming Courses
Course Gallery
This course will begin your preparation for the land navigation phase of selection and beyond.










We’re often asked these questions about this course...
Yes, our Mil-Nav Program prepares individuals for the land navigation phase of an assessment and selection course. We provide this training for both individual candidates and units. We’ve worked with most branches and ranks. Many are in an SOF or leadership pipeline, like Special Forces (18X), Ranger, OCS, BOLC, and WOCS, while others are preparing for CAG selection. We also provide instructor development to combat training groups and special mission units.
Our training site provides an ideal learning environment for all skill levels not found anywhere else. The vegetation, terrain, and climate spans the mix from open, easy, and pleasant to dense, strenuous, and harsh. This is why the SOF community uses this same area to conduct their own specialized training and assessment.
This training is open to all sworn law enforcement professionals. We highly recommend these courses for LEOs who are interested in improving their physical fitness and endurance, expanding their skills and mission readiness, or looking to advance their careers by expanding their expertise. Prior clients include federal agents preparing for their agency SOG, members of a state and municipal SRT, Game Wardens, and Rangers.
We recommend that you telephone Erik (412.913.6000) to discuss prior to registering for this course.


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