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Comprehension: Read the following passage and answer the questions given after it. Indi's government-run aerospace and defence firm Hindustan Aeronautics Limited (HAL) has completed the delivery of all 16 ALHMk3 helicopters, as ordered by the Indian Coast Guard (ICG). The delivery of the chopper took place at a ceremony in Bengaluru, in the presence of officials from the HAL and ICG. Ananthakrishnan, CMD, HAL, said a unique feature of the contract has been the Performance Based Logistics (PBL) - the one stop solution for the maintenance of these helicopters by HAL. HAL Officials said that the major challenges in executing the ICG contract for choppers included the integration of new systems sourced from foreign manufacturers, conducting flight trails and overcoming supply chain disruptions, that arose during COVID-19 lockdowns. Q. What is the meaning of the word 'seamless' in the passage?