The Cubs' current spring training facility is located in Sloan Park in |Mesa, Arizona, where they play in the Cactus League. The park seats 15,000, making it Major League baseball's largest spring training facility by capacity. The Cubs annually sell out most of their games both at home and on the road. Before Sloan Park opened in 2014, the team played games at HoHoKam Park - Dwight Patterson Field from 1979. "HoHoKam" is literally translated from Native American as "those who vanished." The North Siders have called Mesa their spring home for most seasons since 1952.
How many seats are in the Cubs' Sloan Park training facility?
15,000

Defensive Counterair (DCA) is defined as "all the defensive measures designed to detect, identify, intercept, and destroy or negate enemy forces attempting to penetrate or attack through friendly airspace" (JP 1-02). A major goal of DCA operations, in concert with OCA operations, is to provide an area from which forces can operate, secure from air and missile threats. The DCA mission comprises both active and passive defense measures. Active defense is "the employment of limited offensive action and counterattacks to deny a contested area or position to the enemy" (JP 1-02). It includes both ballistic missile defense and air breathing threat defense, and encompasses point defense, area defense, and high value airborne asset defense. Passive defense is "measures taken to reduce the probability of and to minimize the effects of damage caused by hostile action without the intention of taking the initiative" (JP 1-02). It includes detection and warning; chemical, biological, radiological, and nuclear defense; camouflage, concealment, and deception; hardening; reconstitution; dispersion; redundancy; and mobility, counter-measures, and stealth.
What does the abbreviation DCA stand for?
Defensive Counterair

In Babylonian astronomy, records of the motions of the stars, planets, and the moon are left on thousands of clay tablets created by scribes. Even today, astronomical periods identified by Mesopotamian proto-scientists are still widely used in Western calendars such as the solar year and the lunar month. Using these data they developed arithmetical methods to compute the changing length of daylight in the course of the year and to predict the appearances and disappearances of the Moon and planets and eclipses of the Sun and Moon. Only a few astronomers' names are known, such as that of Kidinnu, a Chaldean astronomer and mathematician. Kiddinu's value for the solar year is in use for today's calendars. Babylonian astronomy was "the first and highly successful attempt at giving a refined mathematical description of astronomical phenomena." According to the historian A. Aaboe, "all subsequent varieties of scientific astronomy, in the Hellenistic world, in India, in Islam, and in the Westif not indeed all subsequent endeavour in the exact sciencesdepend upon Babylonian astronomy in decisive and fundamental ways."
Who believes that the Hellenistic world relies on Babylonian astronomy?
A. Aaboe