MCO P3121.1 governs Marine Corps policies and procedures for participation in the Department of Defense PPBS.
View MCO P3121.1 on armypubs.army.mil
It covers planning, programming, budgeting, financial aspects, requirements, program priorities, cost effectiveness analysis, and POM procedures. It requires coordination, data submission, program review, and development of Marine Corps program recommendations.
Applies to: The policies and procedures in this Manual apply to HQMC staff agencies and field commanders.
Paragraph numbering is based on four digits. The first digit indicates the chapter; the next digit, the section, the final two digits the general major paragraph number; and the combinations which follow the decimal point, the subparagraph number; e.g., 3103.3a(2) refers to chapter 3, section 1, general major paragraph number 03, subparagraph 3a(2). (paragraph 2)
Program managers develop and provide life-cycle cost data for their particular program initiatives. (paragraph 4)
The review is conducted late in the development process in order to enable the review of specific programs. (paragraph 2)
That RDT&E becomes a part of the "tails" of that acquisition initiative. Therefore, RDT&E does not compete separately against other acquisition initiatives in any program review or evaluation. (paragraph 7-6)