This can fall by the wayside, however, during unrestricted warfare. Targeting may also refer to the targeting of the actual objective to be destroyed by military personnel, such as painting a target with a laser for laser guided munitions, estimating range for artillery, etc.
Cloud is 173 cm / 5'8. Tifa is 167 cm / 5'6. Aerith is 163 cm / 5'4, she's at the same height as Rinoa from Final Fantasy VIII and Shion from Xenosaga. Yuffie is 160 cm / 5'3. That's what I remember from the Japanese manual without looking at a web page about it again.
The categories are simple - low clouds, middle clouds, and high clouds. Low clouds can have a base from the ground up to about 6,500 feet. Some clouds in this category include cumulus, cumulonimbus, and stratus clouds. Middle clouds can have a base ranging from about 6,500 ft to about 20,000 feet up. Some clouds in this category include altocumulus, altostratus, and nimbostratus.