There has also been criticism on the usage of the AEGIS system and the SPY-1F radar, as some fear its interoperability with other AEGIS Class vessels may be used to support the US missile defense, which remains a controversial issue. While its Link-11 capabilities allow basic level integration into US Navy groups, and Co-operative Engagement Capability
could be installed quickly if not already present, the SPY-1F differs from the SPY-1D(V) in that it has not been designed to provide ballistic missile defense capability
through software and hardware modifications. Such tasks are also beyond the capabilities of the Fridtjof Nansen Class’ ESSM air-defense missiles.