The RPF constable was dismissed from service following a train firing incident due to the following reasons:

• 1. Unauthorized use of a firearm: The constable used his service revolver without proper authorization during the incident, which goes against standard protocols and guidelines of the Railway Protection Force (RPF).
• 2. Failure to exercise restraint: Instead of using non-lethal methods to control the situation, the constable resorted to fatally shooting the senior and three passengers. This act indicates a lack of proper judgment and use of excessive force, which is unacceptable in law enforcement.
• 3. Violation of duty: The RPF constable failed in his duty to protect and ensure the safety of the passengers on the train. His actions resulted in the loss of innocent lives, indicating a clear breach of trust and responsibility as a law enforcement officer.
• 4. Loss of public confidence: The incident created a significant outcry among the public, raising concerns about the professionalism and integrity of the RPF. Dismissing the constable from service was crucial to maintain public trust in the law enforcement agency and reassure the passengers about their safety during train travel.

Considering these factors, the dismissal of the RPF constable was necessary to uphold the principles of justice, maintain public confidence, and ensure accountability within the force.