Intermediate Maintenance (I-level) (in centrally located facilities within a designated geographical area)

depot maintenance (beyond O and I level activities, performed in an industrial-type facility) / D-level maintenance

I-level training (Intermediate Maintenance)

centrally-controlled sight

organizational maintenance (O-level) (day-to-day work that standard airfield maintenance groups perform in support of airfield operations)

within level stock

intermediate maintenance

fire within the battle area

Naval Facilities Engineering Command Technical Publication - Maintenance Operation

designated personnel

designated route

designated units

perform designated missions

reservists designated for service

designated

Specially Designated Nationals and Blocked Persons List (the)

geographical landmark

geographical position

working group on equitable geographical representation

north reference direction of geographical meridian

geographical coordinates

geographical azimuth

geographical barrier

geographical coordinates

geographical location name

geographical reference

geographical reference guidance

contingency maintenance / special maintenance

maintenance checks / routine maintenance, scheduled tasks

maintenance idling (periodic running of engine for maintenance purposes)

routine maintenance / scheduled tasks, maintenance checks

scheduled tasks / routine maintenance, maintenance checks

special maintenance / contingency maintenance