Nuclear surety ensures the safety, security and effectiveness of nuclear operations. Because of their political and military importance, destructive power, and the potential consequences of an accident or unauthorized act, nuclear weapons and nuclear weapon systems require special consideration and protection against risks and threats inherent in their peacetime and wartime environments. The Air Force, in conjunction with other entities within the Departments of Defense or Energy, achieves a high standard of protection through a stringent nuclear surety program. This program applies to materiel, personnel, and procedures that contribute to the safety, security, and control of nuclear weapons, thus assuring no nuclear accidents, incidents, loss, or unauthorized or accidental use (a Broken Arrow incident). The Air Force continues to pursue safe, secure and effective nuclear weapons consistent with operational requirements. Adversaries, allies, and the American people must be highly confident of the Air Force's ability to secure nuclear weapons from accidents, theft, loss, and accidental or unauthorized use. This day-to-day commitment to precise and reliable nuclear operations is the cornerstone of the credibility of the NDO mission. Positive nuclear command, control, communications; effective nuclear weapons security; and robust combat support are essential to the overall NDO function.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is a Broken Arrow incident in nuclear security? 
Ah, so.. unauthorized or accidental use

In January 1989, Madonna signed an endorsement deal with soft-drink manufacturer, Pepsi. In one of her Pepsi commercials, she debuted her song "Like a Prayer". The corresponding music video featured many Catholic symbols such as stigmata and cross burning, and a dream of making love to a saint, leading the Vatican to condemn the video. Religious groups sought to ban the commercial and boycott Pepsi products. Pepsi revoked the commercial and canceled her sponsorship contract. The song was included on Madonna's fourth studio album, Like a Prayer, which was co-written and co-produced by Patrick Leonard and Stephen Bray. Madonna received positive feedback for the album, with Rolling Stone writing that it was "as close to art as pop music gets". Like a Prayer peaked at number one on the Billboard 200 and sold 15 million copies worldwide, with 4 million copies sold in the U.S. alone. Six singles were released from the album, including "Like a Prayer", which reached number one, and "Express Yourself" and "Cherish", both peaking at number two. By the end of the 1980s, Madonna was named as the "Artist of the Decade" by MTV, Billboard and Musician magazine.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many copies did Like A Prayer sell worldwide?
Ah, so.. 15 million copies

The first European to visit the region was Portuguese-born explorer Juan Rodríguez Cabrillo sailing under the flag of Castile. Sailing his flagship San Salvador from Navidad, New Spain, Cabrillo claimed the bay for the Spanish Empire in 1542, and named the site 'San Miguel'. In November 1602, Sebastián Vizcaíno was sent to map the California coast. Arriving on his flagship San Diego, Vizcaíno surveyed the harbor and what are now Mission Bay and Point Loma and named the area for the Catholic Saint Didacus, a Spaniard more commonly known as San Diego de Alcalá. On November 12, 1602, the first Christian religious service of record in Alta California was conducted by Friar Antonio de la Ascensión, a member of Vizcaíno's expedition, to celebrate the feast day of San Diego.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where did Cabrillo leave from to embark on his journey to the West Coast?
Ah, so..
Navidad, New Spain