"Siap.... Grak...." Have you ever heard this voice? Maybe you follow ceremorni or you are immediately thought of paskibra. The Paskibraka (Indonesian: Pasukan Pengibar Bendera Pusaka or "National Flag Hoisting Troop") is a youth organization in Indonesia which has the main task for raising and lowering the heirloom national flag of Indonesia (now duplicate) in Independence day ceremonies commemorating the independence day of Indonesia (17 August) throughout Indonesia.

Paskibraka (PLC) is the one of extracurricular activities of 15 Senior High School in Surabaya known for its discipline. Paskibraka open to everyone who want to learn about lines of lined up. Paskibraka practices every Saturday but, if there is a competition they practice everyday in two weeks. They are trained by Mr. Bagus.

Generally, Paskibraka is not famous extracurricular. But, on Independent day 2019, Paskibraka maked us proud with his members, Khansa and Kevin, can joined flag hoisting troop in Surabaya City Hall. "I'm so happy and thankful because my hard work can bring me to flag hoisting troop in Surabaya City. And I'm proud to be proud of Libels" said Khansa, member of Paskibraka.