Some news coverage of CANSEC 2011 and protests

Military contractors show their wares at defence show
Important to stay visible in time of spending cuts, vendors say
By Vito Pilieci, Ottawa Citizen June 2, 2011

Military show spurs protest

Anti-War Protesters Gather at Lansdowne Park
Lauren Davis with Gord McDougall. 580 CFRA
Wednesday, June 1, 2011
Protesters stage sit-in at military trade show in Ottawa
CTV, Wednesday, June 1, 2011

Minister Ambrose Addresses Canada's Defence and Security Industry Leaders
Marketwire - June 1, 2011

New armoured vehicles on army's shopping list
By Bryn Weese ,Parliamentary Bureau
Wednesday, June 1, 2011

Orders of the Day - Two out of three parties agree: It's Caucus Meetin' Time!
June 1, 2011 8:10 AM | Read 7 comments7
By Kady O'Malley

CANSEC Protest
Ottawa Citizen video, June 1, 2011

CANSEC:  Rally and protest at the CANSEC weapons fair
Ottawa Citizen video, June 1, 2011

Money for 'smart bombs,' not for social needs
Letter, Victoria Times Colonist, June 4, 2011

There are numerous other stories that "google news" finds, but they are mostly promoting particular companies' products. 

Two older news items:

CANSEC to face protests
Centretown News, Friday, 06 May 2011

Protests Planned For CANSEC
By Dave Pugliese, Ottawa Citizen (blog)
Fri, May 13 2011