Answer:

houston

AnswerCrossword Clue
HOUSTONSee 39A
HOUSTONLargest city in Texas
HOUSTONCity where Citgo and Shell are based
HOUSTONRice University site
HOUSTONAddressee of the 4-14-1970 message "we've had a problem"
HOUSTONGrammy-winner Whitney
HOUSTONFourth-most populous U.S. city
HOUSTONJohnson Space Center locale
HOUSTONFirst Republic of Texas president
HOUSTON"The Bayou City"
HOUSTONSan Jacinto victor
HOUSTONLeader of Texas Army, 1835.
HOUSTONWhere the Shamrock Hotel is.
HOUSTONTexas street of N. Y.
HOUSTONHome of the Oilers
HOUSTONGeorge Bush's home now
HOUSTONTwo-time president of Texas
HOUSTONAstronauts' contact
HOUSTONFirst word spoken to earth from the lunar surface
HOUSTONHome base for many a mission
HOUSTONAstros' home
HOUSTONIt has overtaken Los Angeles as America's smoggiest city
HOUSTONTexas city
HOUSTONBrown's former partner
HOUSTONCompaq's headquarters
HOUSTONSam who won at the Battle of San Jacinto