BWA: Is alignment summary available?

[Protaeus]

Is there a tool associated with BWA that can provide a concise overall summary of the alignments/pairing, such as:
1. How many reads did not map?
2. How many single ends mapped?
3. How many reads were successfully paired

[swbarnes2]

I don't think so. I use samtools flagstat.

[DZhang]

I use picard