QUETTA, Pakistan: On the evening of Aug. 14 last year, Siraj Ahmed, a 40-year-old train supervisor in the southwestern city of Quetta, returned home from work and told his children how beautifully the local railway station had been decorated with colorful lights and a narrow-gauge steam locomotive for families to visit as part of Pakistan’s Independence Day festivities. Out of excitement, his children — Ajwa, 11, Haris, 9, and Khizar, 6 — begged him to take them to see the lights and decor.