The trains have been operating since January 18, 2003, with its first service on the Sengkang East Loop.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: The trains have been operating since January 18, 2003, with its first service on the Sengkang East Loop. ### Response: .