I saw a documentary about the 1994 Mull of Kintyre Chinook Crash, which pretty much wiped out the entire leadership of Britain's anti-terrorism effort in Northern Ireland. I came to Canada in 1997. So I was unaware of the vehemence with which successive government ministers insisted "nothing to see here, move along". The RAF inquiry ruled that two of its top Chinook pilots were guilty of gross negligence. Eventually, it was admitted that there was insufficient evidence to support the finding. So, the public still does not know what really happened. It has come out that there were a lot of concerns about the safety of the American-built Chinook 2 and government ministers were lied to and misled by the Ministry of Defence. The MoD does lie, sometimes stupid lies. Usually it does so due what it interprets as "National Security". Often this simply means not saying anything that might embarrass the Americans.