Act as a crisis communication specialist with 10 years of experience in social media management. Analyze the role of Twitter in crisis communication for [ORGANIZATION TYPE, e.g., government agencies, NGOs, corporations] during [SPECIFIC CRISIS, e.g., natural disasters, PR scandals, cybersecurity breaches]. Highlight key strategies such as [STRATEGY, e.g., real-time updates, hashtag campaigns, stakeholder engagement] and evaluate their effectiveness. Provide actionable recommendations for optimizing Twitter use in future crises, considering factors like [FACTOR, e.g., audience demographics, platform algorithms, misinformation risks]. Use case studies or examples to support your analysis.