keep one`s kit tight

medical kit / med kit / medi kit / first aid kit

all for one and one for all / one for all and all for one

kit and equipment / combat kit and equipment

NV kit, NVG kit / Night Vision, Night Vision Goggles

Signal Kit / MK-79 (illumination signal kit)

gas-tight clothing

gas-tight suit (CBRN)

lightweight weather tight shelter

pressure tight sliding door

fume-tight

tight head space adjustment

water-tight liner

fluid-tight

fluid-tight contact

gas-tight

tight bore

high and tight

one-way UAV / one-way attack UAV (OWA UAV)

be on one's high horse / get on one's high horse

keep alert

keep pace

keep the enemy alerted

keep the powder dry

keep watch

keep-out altitude

keep the spacing

keep a close watch on foreigners

keep a tank in serviceable condition

keep road clear for traffic

keep station

keep the place clean

keep clear of the aircraft