Terrorists attacked Pakistan Navy`s airbase PNS Mehran in Karachi late on Sunday, setting off seven high intensity explosions. The terrorists also managed to penetrate into hangars in the base and managed to destroy two naval aircraft. They later regrouped inside a building and engaged in heavy exchange of gunfire with naval commandos and rangers who managed to make their way inside the base. This battle has so far resulted in a heavy toll of about 11 naval personnel and two rangers personnel, whereas only four terrorists have been killed.
It is speculated that there were 16 highly  trained well-equipped terrorists who penetrated the base. They had full  information about the inside of the base and followed a well-organised  assault plan. According to some reports, the terrorists made their way  inside the base from three sides away from the main entrance gates,  which were closely guarded. This is quite surprising as, apart from the  main gates, all other areas and boundaries usually have watchtowers  located at every corner. How can 16 men carrying heavy equipment bags  escape from the watchful eyes of guards on these watchtowers?  
This attack is quite alarming as far as the  security and safety of strategic defence installations is concerned. One  can recall earlier attacks on GHQ, Naval College in Lahore, armed  forces vehicles convoys in Karachi and Rawalpindi in which armed  terrorists carried out their operation and got away. In addition to  these, facilities belonging to police and other law enforcement agencies  have been targeted in the past with ease by these terrorists. In all  cases they managed to penetrate inside these facilities and carried out  their plans swiftly and got out.  
After looking at all these cases, one cannot  help but think if this is the state of security of the institutions that  are responsible for the security of ordinary people, then where is the  security of the common people? That is the main reason that civilians  have become sitting ducks for terrorists and now the armed forces`  personnel have also been included in this list.  
There is something missing in this link and I  believe there is a big problem of security lapse in each of these  cases. It is no secret that our security system has been penetrated at  some level and information is leaking out, be it the case of Osama bin  Laden hiding near the military academy or terrorist attacks like these.  They cannot be planned without strategic information about details of  the location or target area. In my opinion, the government has to revamp  and clean its security and intelligence systems. It has to redesign its  surveillance, intelligence and information gathering systems.  
However, whatever the case may be, it is  quite depressing to see this state of affairs which is getting worse  with every passing day and no one seems to have any clue on how to  tackle this issue of security of our defence installations. 
nasir riaz