In 2000 and 2001 , in response to the Rizal Day bombings and the September 11th attacks , security was stepped up on the line . The Philippine National Police has a special police force , and security police provided by private companies can be found in all stations . All stations have a head guard . Some stations may also have a deployed K9 bomb-sniffing dog . It also employs the use of closed-circuit television inside all stations to monitor suspicious activities and to assure safety and security aboard the line . Passengers are also advised to look out for thieves , who can take advantage of the crowding aboard the trains . Wanted posters are posted at all stations to help commuters identify known thieves
Rizal Day bombings
Rizal Day bombings
Manila Metro Rail Transit System Line 3