Simplify the following text for a Grade 10 native English-speaking person.
Original: On 14 April 2005 , the Singapore Police Force announced plans to step up rail security by establishing a specialised Police MRT Unit , now known as Public Transport Security Command ( Transcom ) .
Simplified: On 14 April 2005 , the Singapore Police Force announced plans to step up rail security by establishing a specialised Police MRT Unit .