1. Electronic warfare undertaken under direct control of an operational commander to locate sources of radiated electromagnetic energy for the purpose of immediate threat recognition.
4. One thousandth of a second.
8. The sense organ for hearing and equilibrium.
11. Tag the base runner to get him out.
12. A unit of area (4840 square yards) used in English-speaking countries.
13. The 21st letter of the Greek alphabet.
14. A loose sleeveless outer garment made from aba cloth.
15. An international organization created in 1949 by the North Atlantic Treaty for purposes of collective security.
16. Thigh of a hog (usually smoked).
17. A white metallic element that burns with a brilliant light.
20. A unit of heat equal to 100,000 British thermal units.
24. An independent agency of the United States government responsible for collecting and coordinating intelligence and counterintelligence activities abroad in the national interest.
25. Of or belonging to an aecium.
29. A software system that facilitates the creation and maintenance and use of an electronic database.
31. A sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain.
32. A coenzyme derived from the B vitamin nicotinic acid.
33. Not only so, but.
36. (Akkadian) God of wisdom.
40. Belonging to or on behalf of a specified person (especially yourself).
43. Any of numerous local fertility and nature deities worshipped by ancient Semitic peoples.
45. Electronic equipment that provides visual images of varying electrical quantities.
46. (Babylonian) God of storms and wind.
48. Blood cells that engulf and digest bacteria and fungi.
49. Large brownish-green New Zealand parrot.
50. A small cake leavened with yeast.
51. A unit of length of thread or yarn.

1. Order by virtue of superior authority.
2. A region of Malaysia in northeastern Borneo.
3. A master's degree in business.
4. The capital of Bahrain.
5. Someone who works (or provides workers) during a strike.
6. The universal time coordinated when an event is received on Earth.
7. The corporate executive responsible for the operations of the firm.
8. An ancient Hebrew unit of dry measure equal to about a bushel.
9. According to the Old Testament he was a pagan king of Israel and husband of Jezebel (9th century BC).
10. Tall New Zealand timber tree.
18. British physicist (born in Austria) who with Lise Meitner recognized that Otto Hahn had produced a new kind of nuclear reaction which they named nuclear fission.
19. A committee in the executive branch of government that advises the president on foreign and military and national security.
21. Electronic warfare undertaken to prevent or reduce an enemy's effective use of the electromagnetic spectrum.
22. Large burrowing rodent of South and Central America.
23. English economist noted for his studies of international trade and finance (born in 1907).
26. A hospital unit staffed and equipped to provide intensive care.
27. The eleventh month of the civil year.
28. A white soft metallic element that tarnishes readily.
30. A member of the Iroquoian people formerly living east of Lake Ontario.
34. A republic consisting of 26 of 32 counties comprising the island of Ireland.
35. Small buffalo of the Celebes having small straight horns.
37. The blood group whose red cells carry both the A and B antigens.
38. A very young child (birth to 1 year) who has not yet begun to walk or talk.
39. Type genus of the Alcidae comprising solely the razorbill.
41. The bill in a restaurant.
42. A compartment in front of a motor vehicle where driver sits.
44. A pointed tool for marking surfaces or for punching small holes.
45. The blood group whose red cells carry both the A and B antigens.
47. An official prosecutor for a judicial district.