(i) Positions requiring eligibility for access to Secret, Confidential, or “L” classified information; or

(ii) Positions not requiring eligibility for access to classified information, but having the potential to cause significant or serious damage to the national security.

(i) Positions requiring eligibility for access to Top Secret or “Q” classified information;

(ii) Positions not requiring eligibility for access to classified information, but having the potential to cause exceptionally grave damage to the national security;

(iii) Positions involving development or approval of war plans, major or special military operations, or critical and extremely important items of war;

(iv) National security policy-making or policy-determining positions;

(v) Positions with investigative duties, including handling of completed counterintelligence or background investigations, the nature of which have the potential to cause exceptionally grave damage to the national security;

(vi) Positions involving national security adjudicative determinations or granting of personnel security clearance eligibility;

(vii) Positions involving duty on personnel security boards;

(viii) Senior management positions in key programs, the compromise of which could result in exceptionally grave damage to the national security;

(ix) Positions having direct involvement with diplomatic relations and negotiations;

(x) Positions involving independent responsibility for planning or approving continuity of Government operations;

(xi) Positions involving major and immediate responsibility for, and the ability to act independently without detection to compromise or exploit, the protection, control, and safety of the nation's borders and ports or immigration or customs control or policies, where there is a potential to cause exceptionally grave damage to the national security;

(xii) Positions involving major and immediate responsibility for, and the ability to act independently without detection to compromise or exploit, the design, installation, operation, or maintenance of critical infrastructure systems or programs;

(xiii) Positions in which the occupants have the ability to independently damage public health and safety with devastating results;

(xiv) Positions in which the occupants have the ability to independently compromise or exploit biological select agents or toxins, chemical agents, nuclear materials, or other hazardous materials;

(xv) Positions in which the occupants have the ability to independently compromise or exploit the nation's nuclear or chemical weapons designs or systems;

(xvi) Positions in which the occupants obligate, expend, collect or control revenue, funds or items with monetary value in excess of $50 million, or procure or secure funding for goods and/or services with monetary value in excess of $50 million annually, with the potential for exceptionally grave damage to the national security;

(xvii) Positions in which the occupants have unlimited access to and control over unclassified information, which may include private, proprietary or other controlled unclassified information, but only where the unauthorized disclosure of that information could cause exceptionally grave damage to the national security;

(xviii) Positions in which the occupants have direct, unrestricted control over supplies of arms, ammunition, or explosives or control over any weapons of mass destruction;

(xix) Positions in which the occupants have unlimited access to or control of access to designated restricted areas or restricted facilities that maintain national security information classified at the Top Secret or “Q” level;

(xx) Positions working with significant life-critical/mission-critical systems, such that compromise or exploitation of those systems would cause exceptionally grave damage to essential Government operations or national infrastructure; or

(xxi) Positions in which the occupants conduct internal and/or external investigation, inquiries, or audits related to the functions described in paragraphs (a)(2)(i) through (xx) of this section, where the occupant's neglect, action, or inaction could cause exceptionally grave damage to the national security.