In terms of potential terrorism the answer is an emphatic "NO". However, authorities cannot be seen to admit that there is no 100% security against determined suicidal terrorists. Look at Israel. So, the so-called security we see and have to succumb to at airports is designed to reassure the general public that something positive is being done and all is well. None of it will actually stop a determined terrorist attack - which will next time no doubt come from a diiferent quarter exploiting the numerous other security flaws which still exist at and around all airports. On the other hand if 100% fail-safe security could be and was imposed, flying would cease to be an acceptable mode of transport and the industry would collapse.