This is why you'll hear gunfire off the Devon coast for the next…
The sound of gun fire will ring out along Devon' southern coastline while Royal Marines carry out training exercises in the region.
As part of a week-long exercise, members of Debvon–based 1 Assault Group Royal Marines (1AGRM) will be conducting a blank-firing exercise along the south coast between Dartmouth and Fowey.
The training will start today, Friday, and end next Friday, December 2.
The Ministry of Defence has warned that white flare illuminations may also be used during the exercise.
People living or working along the south coast of Devon and Cornwall are being advised of possible noise disturbance.
A Ministry of Defence spokesman said: "We apologise in advance for any disturbance from the firing that might occur.
"However, the blank firing will be taking place as part of the essential vocational career courses we run for Royal Marines landing craftsmen.
"The next generation of Royal Marines landing craft coxswains and commanders are being trained.
"These exercises are a vital part of their development and validation.''
Training is due to take place at Tregantle in South East Cornwall and on the River Yealm near Dartmoor today.
On Saturday the commandos will be at Start Point, River Dart, Salcombe and Southpool.
The Royal Marines will be in Looe and Fowey on Sunday and Looe, Pentewan and Bodinnick on Monday.
On Tuesday, the training will continue at Jenny Cliff, Plymouth.
The exercise is due to finish next Friday.