Hello, could you first of all, stop the editing of Ministry of Communications to Ministry of Communications & the Arts (MICA)? As explained, its incorrect to refer to Ministry of Communications as MICA or even the present-day Ministry of Communications and Information (MCI). 

About the Mission & Vision. The Mission was in the previous version, but it's not quite correct. Hence the update to align it more closely to the actual Mission & Vision of LTA as an organisation. It's not considered as plagiarism, because it is what it is. It's not about the source (website), but it is the actual Mission and Vision of LTA. For example, if it were a School's Mission and Vision, you'd also listing the actual Mission and Vision as it is stated officially. And that would not be plagiarism.