Madrid, 18/03/2013 (Agence Europe) - The private security sector is constantly growing. Its economic weight in Europe increased by 14% between 2005 and 2010. Although the economic crisis has produced market contraction and sometimes unfair competition, the scope of action enjoyed by private companies continues to increase and sometimes compete in areas formerly the preserve of public sector forces of law and order. Transporting prisoners, security at airport and so-called critical...