LONDON (TIP): Terrorists tried to carry out three 9/11-type attacks in the UK since 2009, British Home Office said on March 26. The home office listed three occasions: in December 2009, October 2010 and April 2012, when terrorist groups targeted civilian aircraft to carry out such attacks but were thwarted by British security agencies. Home secretary Theresa May on Wednesday said, “Aviation security is a high priority of our protective security programme. We have accelerated the deployment of new airport security scanners, which give us the best chance of detecting the threat from nonmetallic improvised explosives. Following a risk based assessment these are now operational in all terminals at major UK airports.”