perimeter monitoring
41Filiberto Ojeda Ríos — Infobox Person name = Filiberto Ojeda Ríos caption = birth date = April 26, 1933 birth place = Naguabo, Puerto Rico death date = September 23, 2005 death place = Hormigueros, Puerto Rico other names = known for = Leader of the Macheteros Founder… …
42RAF Menwith Hill — Royal Air Force Menwith Hill Part of USAF Air Force Intel …
43Mass wasting — at Palo Duro Canyon, West Texas (2002) …
44Battle of Long Tần — Infobox Military Conflict conflict=Battle of Long Tần partof=the Vietnam War caption= date=August 18 19, 1966 place=coord|10|33|14|N|107|15|32|E|type:landmark|display=title,inline Long Tần, Phuoc Tuy Province, Republic of Vietnam casus= territory …
45Roy Benavidez — Infobox Military Person name= Roy Perez Benavidez born= birth date|1935|8|5 died= Death date and age|1998|11|29|1935|8|5 placeofbirth= Cuero, Texas placeofdeath= placeofburial= caption= nickname= allegiance=flagicon|United States United States of …
46Scientific research in Canada — This article outlines the history of natural scientific research in Canada including, mathematics, physics, astronomy, space science, geology, oceanography, chemistry, biology, medical research and psychology. The social sciences are not treated… …
47Battle of Long Tan — Battle of Long Tân Part of the Vietnam War …
48Tire — This article is about tires used on road vehicles, including pneumatic tires and solid tires. For railroad tires, see railway tires. For other uses, see tire (disambiguation) or tyre.Tires, or tyres (in American and British English, respectively) …
49Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …
50Military police — The Singapore Armed Forces Military Police Command providing security coverage at the Padang in Singapore during the National Day Parade in 2000 …
