The CCTV systems at the airports are installed to ensure
1. effective surveillance of the area.
2. a tamper-proof record, for any post-event analysis.
3. live and recorded images.
Select the correct answer using the code given below:

CCTV (Closed-Circuit Television) systems are integral to airport security and operations for several reasons:

• Effective Surveillance: They provide comprehensive coverage of critical areas like terminals, perimeters, and runways, allowing security personnel to monitor activities in real-time and detect threats.
• Tamper-proof Records: Modern digital surveillance systems use secure storage and encryption to create a reliable record of events. These records are essential for post-event forensic analysis, legal evidence, and investigating security breaches.
• Live and Recorded Images: The systems offer dual functionality—live feeds for immediate situational awareness and recorded footage for historical review and auditing.

Regulatory bodies such as the Bureau of Civil Aviation Security (BCAS) in India mandate these systems to ensure a high level of security and operational safety at airports. Therefore, all three statements correctly describe the purposes of installing CCTV systems.