1 Some people find that other more sedating antihistamines (like Zyrtec or Benadryl) are more effective for them. 2  If you have daily allergy symptoms, a prescription nasal steroid spray might be better for you long-term. 3  Not for kids under 2 years.  The Reditabs version contains aspartame (phenylalanine).
Danger Close does not mean there's danger [in the form of bad guys] that is close. It means friendly indirect fire support will be engaging targets [this is the danger], and their kill- or wound-zones will overlap with friendly positions [this is the close].
Barking in a fairly continuous string but lower pitch and slower than the usual alarm bark suggests that the dog is sensing an imminent problem. Thus this sound means The intruder (or danger) is very close. I don't think that he is friendly.