NEW DELHI, May 2 -- The army and the air force's Dhruv advanced light helicopter (ALH) fleets, grounded nearly four months ago following a fatal coast guard crash in Gujarat, have been declared airworthy, Hindustan Aeronautics Limited (HAL) said on Thursday. The navy and coast guard's ALHs are still grounded. The development comes even as the military readies plans to respond to Pakistan in the aftermath of the Pahalgam terror attack.P7...