Answer: skies

AnswerCrossword Clue
SKIESSends aloft.
SKIESMeteorologists' study
SKIESIrving Berlin's "Blue ....."
SKIES" . . . for spacious ..."
SKIES"Blue ...," 1927 Berlin song
SKIES"Blue ...," Berlin song
SKIESBerlin's were blue
SKIESBerlin's "Blue ...": 1927
SKIES"Blue ...," 1927 hit song
SKIESHits a high pop-up
SKIESHits a towering fly.
SKIES"Friendly" things, in old ads
SKIESThe firmament.
SKIESHits a tall fly.
SKIESBlue ....
SKIESUpper atmosphere.
SKIESTo the ... (without reserve).
SKIESFirmament.
SKIESHeavens.
SKIESHits a high fly.
SKIESWilliam Bridgeman's usual habitat.
SKIESAir Force domain
skiesSKY, to hit or throw towards the upper atmosphere
skiesthe upper atmosphere of the earth
SKIESUnited's are friendly
SKIES"Blue ..." (Irving Berlin classic)
SKIESThey can be clear and blue
SKIESCloudy areas
SKIES"Blue ...": Berlin classic
SKIESBerlin's Blue ....
SKIESThey may be clear or threatening
SKIESRaises aloft: Colloq.
SKIESBerlin tune with "Blue"
SKIES"Blue ....." (Berlin tune)
SKIESFirmaments
SKIES"Blue ... smiling at me...": Berlin
SKIESAir Force territory
SKIESThe friendly ...
SKIESJumps higher than, in sports slang
SKIESThey're "friendly" in an ad campaign