; and (ii) does not include subcritical experiments carried out as part of the stockpile stewardship program under section 4201, laser fusion experiments, or other inertial confinement fusion experiments however driven. (B) Technical need The term technical need , with respect to explosive nuclear testing, means that all officials specified in section 4205(b) determine that an explosive nuclear test is necessary to resolve an issue with respect to the safety, reliability, performance, or military effectiveness of a nuclear weapon type. .