A heart shaped padlock attatched to wire fence on a bridge. The padlock contains the names
Man - only hand to be seen - cutting some glass wool as material for thermal insulation of a new building
Security - disguised burglar breaking in an apartment or office, a woman calling the police with her phone or telephone
Fire brigade - Squad leader gives instructions, he used the Tablet Computer to plan the deployment
ancient cannon and iron balls against white background, abstract vector art illustration