only in the event of “specific orders from the highest levels of government in response to a confirmed and extreme security threat.” Mobile ground radar systems and observers with binoculars will identify the threats.

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Other security measures include the stationing of Typhoon fighter jets in northwest London along with sniper-bearing helicopters able to shoot down aircraft entering restricted airspace without permission.

The naval assault ship HMS Ocean will be positioned on the Thames River near Greenwich, another Olympic venue, to be a logistical support base. A second assault vessel, HMS Bulwark, will be stationed at Weymouth Bay in the south, where sailing events will be held.

River patrols will carry controversial sonic weapons. Although the defense ministry said the American-made long-range acoustictheir work on the 2008 Brisbane Powerhouse Series.

Members

 Bernard Hoey (viola)
 Christa Powell (violin)
 John Babbage (saxophone)
 Kylie Davidson (piano)
 Therese Milanovic (piano)
 Robert Davidson (bass)

Recordings
 Topology (1999): Topology's first CD features originals (composed by Robert Davidson and Tom Adeney).
 Perpetual Motion Machine (2003): Topology's second album features Australian music juxtaposed with leading works by British and American composers.
 Future Tense (2004) (with Full Fathom Five): Topology's cinematically dramatic instrumental/electronic collaboration with Full Fathom Five which used as the soundtrack for French film The Burial.
 Airwaves (2006) (with Loops) 
 Scat (2007) (Music by Tim Brady): A collection of music by Canadian electric guitarist/composer Tim Brady
 Big Decisions (2009): features Rob Davidson's speech-melody piece using the spoken voices of Gough Whitlam, Sir John Kerr, Malcolm Fraser and other