A police helicopter and numerous police cars were called to Broomfield to attend what turned out to be three teenagers shooting a film with prop weapons.The low-flying helicopter and vehicles were seen driving down Seventh Avenue, off Broomfield Road, towards a park which backs on to the River Chelmer.A police spokeswoman said: "Police were called at around 1pm to reports of three men acting suspiciously carrying what appeared to be firearms in Fifth Avenue, Chelmsford."Officers and...
