ICG/NEAMTWS also has the sub-groups : ICG/NEAMTWS Steering Committee , Working Group 3 , ICG/NEAMTWS Invited Observers , Sessional Working Group on a Multi-Hazard Approach , Task Team on the Communication Test and Tsunami Exercises , COPY Permanent Delegations , Working Group 4 , Working Group 2 , Working Group 1 , ICG/NEAMTWS COPY Permanent Delegations , Other ICG/ NEAMTWS Contacts , NEAMTWS GLOSS , Task Team on the Regional Tsunami Warning System Architecture , tsunami test , NEAMTWS Secretariat , NEAMTWS Task Team , Member States , NEAMTWS CTE2 , NEAM potential RTWCs .