There are a number of low flying areas (LFAs) in the UK, the most notable being LFA7 in Wales, LFA17 in the Lake District and the tactical training area (TTA) in the Selkirk-Moffat valley in the Scottish borders. Low flying has steadily decreased over the years, however it still remains an incredibly vital skill for aircrew allowing them to undertake various roles including reconnaissance, search and rescue and transporting troops and humanitarian aid. In the LFAs fixed-wing aircraft are cleared down to 250ft AGL with rotary-wing aricraft being cleared down to 100ft AGL, however rotary aircraft can be cleared below 100ft AGL. Fixed wing aircraft are cleared down to 100ft AGL in the three tactical training areas, allowing crews to realistically train for operations such as the Tornado force needed in the Afghanistan war with shows of force.