 While the number of intrusions has been drastically reduced in recent years with the acquisition of radar and other sophisticated night-vision equipment, the attraction of Singapore as a migrant destination continues to pose a constant operational challenge to the PCG.In addition, the PCG also has to deal with the lesser but daily issue of small-scale illegal fishing and similar activities in Singapore's waters from bordering Malaysian and Indonesian fishing communities.In a further bid to thwart illegal immigrants from landing on Singapore's shores, the PCG has erected physical barriers in the form of high-fencing topped with sharp razor-wire and fitted with electrical motion-sensors along critical areas of the shoreline where such intrusions are common, including in Lim Chu Kang, on Pulau Punggol Barat, Pulau Ubin and the Western Live Firing Area on Singapore's northwestern coast.