ICG/CARIBE EWS also has the sub-groups : ICGCARIBE EWS Officers (CEWS-O) , WG1-Risk Knowledge (WG1-RN) , WG2-Tsunami Detection Analysis and Forecasting (CEWS-WG2-TDAF) , WG3-Tsunami Warning Dissemination and Communication (CEWS-WG3-TWDC) , WG4-Preparedness and Response Capabilities (CEWS-WG4-PRC) , WG4-Preparedness and Response Capabilities-Preparedness and Response capabilities(CEWS-WG4-PRC-PRC) , WG4-Preparedness and Response Capabilities-Mitigation (CEWS-WG4-PRC-M) , WG4-Preparedness and Response Capabilities-Tsunami Ready (CEWS-WG4-PRC-TR) , TT-CARIBE WAVE (CEWS-TT-CW) .