A "Communication Blackout" refers to a situation where all forms of communication are disrupted or completely unavailable. This can occur due to various reasons, such as natural disasters, technical failures, or deliberate actions like military operations. During a blackout, people may lose access to telephones, internet, and broadcast media, making it difficult to share information or stay connected. In emergency situations, communication blackouts can hinder rescue efforts and the dissemination of critical information. Authorities often rely on backup systems or alternative methods, such as satellite communication or two-way radios, to maintain contact and coordinate responses during these challenging times.